Bab 03 - Daya & Tekanan

SULIT For Examiner ‘s use

PAHANG 2009, question 1 [ INTRODUCTION ] Diagram 1.1 shows a Bourdon gauge which is used to measure gas pressure inside a round bottom flask. Rajah 1.1 menunjukkan tolok Bourdon yang digunakan untuk mengukur tekanan gas di dalam kelalang dasar bulat .

Rajah 1.1 Diagram 1.1 / Rajah (a)

State State the sens sensitiv itivity ity of of the the Bourdon Bourdon Gauge. Gauge. Nyatakan kepekaan bagi tolok Bourdon Bourdon tersebut. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(b) (i)

State State the the correc correctt positi position on of of the the eye eye while while taking taking readin reading g from from the Bourdon Bourdon Gauge? Gauge? Nyatakan kedudukan mata yang betul semasa semasa mengambil bacaan pada tolok Bourdon? ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) What is the the pressure pressure of the gas inside inside the round round bottom flask flask as shown shown by the Bourdon Bourdon gauge? gauge? Berapakah tekanan gas di dalam kelalang dasar bulat sperti yang di tunjukkan oleh tolok Bourdon Bourdon itu? ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] (c) The round bottom flask is than heated. Would the reading of the Bourdon Bourdon gauge increase increase or decrease? decrease? Kelalang dasar bulat itu kemudian dipanaskan. dipanaskan. Adakah bacaan tolok Bourdon akan meningkat atau atau menurun? ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

[Lihat halaman sebelah

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2012 Hak Cipta Panitia Fizik SMAPT

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PERAK 2008, question 2 Diagram 2.1 shows a man standing still on reflexology therapy stones. He exerts a pressure on the reflexology therapy stones. Rajah 2.1 menunjukkan seorang lelaki berdiri pegun di atas batu terapi refleksologi. Dia mengenakan tekanan pada batu terapi refleksologi refleksologi

Rajah 2.1 Diagram 2.1 / Rajah (a) (a)

What What is mean meantt by press pressur ure? e? Apakah yang dimaksudkan dengan tekanan? ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ] 2

(b) The mass of the man is 50 kg and the area of contact of the man man with the reflexology therapy stone is 40 cm cm Calculate the pressure exerted by the man on the reflexology therapy stones. 2 Jisim lelaki adalah 50 kg dan luas sentuhan yang dikenakan pada batu terapi refleksologi refleksologi adalah 40 cm Hitungkan tekanan yang dikenakan oleh lelaki pada pada batu refleksologi refleksologi

[ 2 mark / 2 markah ] (c)

Based on diagram 2.1 , state one way by which the man can reduce the pain experienced by his soles when walking barefooted. Explain your answer. Berdasarkan Rajah 2.1 , nyatakan satu cara bagaimana lelaki itu mengurangkan kesakitan yang dialami pada tapak kakinya ketika berlainan berkaki ayam. Huraikan jawapan a nda. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [2 mark / 2 markah ]


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KELANTAN 2010, question 2 Diagram 2.1 shows two different containers filled with water. The water pressure at point P and point Q are the same. Rajah 2.1 menunjukkan dua bekas berlainan diisi dengan air. P dan titik Q adalah, sama. air. Tekanan Tekanan air pada p ada titik P

Bekas A Container Contai ner A / Bekas

Bekas A Container Contai ner A / Bekas Rajah 2.1 Diagram 2.1 / Rajah

(a)

What What is is the meanin meaning g of of pressur pressure? e? Apakah maksud tekanan? ………………………………………………………………………………………………………………………………………..

……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ] (b) State State one factor factor that that affects affects the water water pressure pressure at point point P and Q. P dan titik Q. Nyatakan satu, faktor yang niempengaruhi niempengaruhi tekanan air di titik P ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ] -3 (c) Calcu Calculat latee the water water pressu pressure re atroint atroint P. [Density of water = 1000 kgm ] -3 P. [Ketumpatan air = 1000 kgm ] Hitungkan tekanan air pada lilik P

[2 mark / 2 markah ]

Rajah 2.2 Diagram 2.2 / Rajah

(d)


Diagram 2.2 shows the water spurt when a hole is made near the base of container B. Diagram 2.3 shows the water in container B is replaced by liquid X which has higher density than water. water. Rajah 2.2 nwnunjukkan pancutan air apabila salu lubang dibuat berdekatan dengan dasar bekas B. Rajah 2.3 menunjukkan air dalam bekas B digantikan dengan cecair X yang mempunyai ketumpatan yang lebih tinggi daripada air.

Sketch the spurt of liquid X in Diagram 2.3 . X dalani Rajah 2.3. Lakarkan pancutan cecair X [1 mark / 1 markah ] [Lihat halaman sebelah

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SBP 2010, question 2 Diagram 2.1 shows a cross-section of a bunsen burner. Rajah 2.1 menunjukkan keratan rentas sebuah penunu bunsen.


(i)

Name the Physic’s principle involved in the working principle of bunsen bur ner. ner. Namakan prinsip fizik yang terlibat dalam prinsip prinsip kerja penunu bunsen. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) (ii) Whic Which h regi region on X, Y or Z experiences low pressure? Kawasan manakah X, Y atau Z yang mengalami tekanan rendah? rendah? ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] (b) State State one reason for your your answer answer in 2(a) (ii). Nyatakan satu sebab untuk jawapan jawapan anda dalam 2(a)(ii). ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ] (c) Explain Explain how a bunsen bunsen burner burner can can produce produce blue blue flame. flame. Terangkan bagaimana penunu bunsen boleh menghasilkan nyalaan api yang berwarna biru. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [2 marks arks / 2 mark markah ah]


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PAHANG 2011, question 2 Diagram 2.1 shows two different containers filled with water. Rajah 2.1 menunjukkan dua bekas berlainan diisi dengan air. air.

Bekas A Container Contai ner A / Bekas

Bekas A Container Contai ner A / Bekas Rajah 2.1 Diagram 2.1 / Rajah

(a)

What What is is the meanin meaning g of of pressur pressure? e? Apakah maksud tekanan? ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(b)

State State one factor factor that that affects affects the water water pressu pressure re at point P and Q. P dan titik Q. Nyatakan satu, faktor yang niempengaruhi niempengaruhi tekanan air di titik P ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(c)

-3

Calcu Calculat latee the the wate waterr press pressure ure atroint atroint P. [Density of water = 1000 kgm ] -3 P. [Ketumpatan air = 1000 kgm ] Hitungkan tekanan air pada lilik P


Rajah 2.2 Diagram 2.2 / Rajah (d)


Diagram 2.2 shows the water spurt when a hole is made near the base of container B. Diagram 2.3 shows the water in container B is replaced by liquid X which has higher density than water. water. Rajah 2.2 menunjukkan pancutan air apabila salu lubang dibuat berdekatan dengan dasar bekas B. Rajah 2.3 X yang menunjukkan air dalam bekas B digantikan dengan cecair X yang mempunyai ketumpatan yang yang lebih tinggi daripada air.

Sketch the spurt of liquid X in Diagram 2.3 . X dalam Rajah 2.3. Lakarkan pancutan cecair X [1 mark / 1 markah ] [Lihat halaman sebelah

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JOHOR 2009, question 3 Diagram 3.1 shows two identical feeding bottles submerged in liquids P and Q respectively. Rajah 3.1 menunjukkan dua botol susu yang sama dan masing-masing direndamkan dalam cecair P P dan Q.

P Liquid P P Cecair P

Liquid Q Cecair Q


(a)

(i)

Draw and label label two forces forces that that act act on the feedin feeding g bott bottles les when when they they are subme submerge rged d in in liqui liquid d P. P. Lukis dan labelkan dua daya yang bertindak ke atas atas botol susu apabila direndamkan direndamkan dalam cecair P [1 mark / 1 mark markah ah]

(ii) State State the relationsh relationship ip between between the the two forces in your answer answer for 3(a) (i). (i). Nyatakan perhubungan di antara antara dua daya tersebut berdasarkan berdasarkan jawapan anda dalam 3(a) (i). ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] (b)

State State the physical physical princip principle le that that involved involved in the situation situation given given in in dagram. dagram. Nyatakan prinsip fizik yang berkaitan berkaitan dengan situasi yang diberikan dalam rajah rajah ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(c)

Some content content of of the the feeding feeding bottle submerge submerged d in liquid liquid P is poured out. The bottle is again submerged in liquid P P dikeluarkan. Botol derendamkan semula dalam Sedikit kandungan botol yang direndamkan dalam cecair P P. cecair P (i) (i)

Stat Statee wha whatt hap happe pens ns to the the bottl bottle. e. Nyatakan apa yang berlaku kepada botol. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) The bottle is put put into a denser denser liquid. liquid. State State what happens happens to the the bottle. Explain Explain your your answer. answer. Botol dimasukkan ke dalam cecair yang yang lebih tumpat. Nyatakan apa yang berlaku kepada kepada botol. Terangkan Terangkan jawapan anda. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [2 marks / 1 markah ]


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KEDAH 2009, question 3 Diagram 3.1 shows a block of concrete being lowered to the bottom of a lake. The volume of the blo ck is 2.5 m3 and -3 its weight is 125 000 N. The density of the water in the lake is 1 010 kgm Rajah 3.1 menunjukkan satu bongkah konkrit diturunkan ke dasar sebuah tasik. Isipadu bongkah itu ialah 2.5 m 3 dan -3 beratiiya ialah 125 000 N. Ketunipatan air dalam tasik itu ialah 1 010 kgm


Stat Statee the the SI uni unitt for for press pressur ure. e. Nyatakan unit SI bagi tekanan. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(b)

State State one factor factor that that affects affects the pressur pressuree at a point point below the the surface surface of a liquid. liquid. Nyatakan satu faktor yang menipengaruhi menipengaruhi tekanan pada satu titik di bawah permukaan cecair. cecair. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark mark / 1 markah ]

(c) (c)

(i) (i)

Calc Calcul ulat atee the the weigh weightt of the the wat water er disp displa lace ced d by the the bloc block. k. Hitungkan berat air yang disesarkan disesarkan oleh bongkah itu.

[2 mark / 2 markah ] (ii) (ii) Calc Calcul ulat atee the the tens tensio ion, n, T, in the cable. Hitungkan tegangan, T , dalam kabel itu.



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SBP 2010, question 3 Terengganu. Diagram 3 shows one of the tyres of En Hassan’s car before travelling from Kuala Lumpur to Kuala Terengganu. Rajah 3 menunjukkan salah satu tayar kereta En Hassan sebelum perjalanan dari Kuala Lumpur ke Kuala Terengganu.


Afte Afterr a lon long g jou journ rney ey;; Selepas satu perjalanan yang jauh; (i)

State State what what happen happenss to the pressu pressure re of of the the air air in the tyre? tyre? Nyatakan apakah yang berlaku kepada kepada tekanan udara di dalam tayar? ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) (ii)

Give Give 2 reaso reasons ns to to your your answe answerr in (a)(i (a)(i). ). Berikan 2 sebab kepada jawapan anda di (a)(i). ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [2 marks / 2 markah ]

(b)

Name Name the the Gas Gas Law involv involved ed in (a). Namakan Hukum Gas yang terlibat terlibat dalam (a). ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(c)

Before the journey journey,, En Hassan Hassan checked checked the the air pressure pressure of his car tyre. tyre. The air pressu pressure re of the tyre tyre is 200 kPa at a temperature of 30°C. After After the journey, journey, the temperature of the tyre becomes 60 °C . Calculate the air pressure of the tyre at this temperature. Sebelum memulakan perjalanan, En. Hassan telah memeriksa tekanan udara tayar keretanya. keretanya. Tekanan Tekanan udara tayarnya adalah 200 kPa pada suhu 30 °C. Selepas perjalanan tersebut, tersebut, suhu udara menjadi 60 °C. Hitungkan tekanan udara dalam tayar tersebut tersebut pada suhu ini.

[2 marks / 2 markah ] [Lihat halaman sebelah

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KEDAH 2011, question 3 Diagram 3.1 shows a metal block banging from a spring balance. Diagram 3.2 showS the metal block immersed in eureka can fill with water. Rajah 3.1 menunjukkan satu blok logam tergantung dan sebuah neraca spring. Rajah 3.2 menunjukkan blok logam itu ditenggelamkan ke dalam bekas eureka berisi air.


What What is the mass mass of the metal metal bloc block? k? Berapakah jisim blok logam itu?

( b)

Based on Diagram 3.2: Berdasarkan Rajah 3.2:



(i)

What What is the the appa apparen rentt loss loss in weig weight ht of the meta metall block? block? Berapakah kehilangan ketara berat berat blok logam itu?

[1 mark / 1 markah ] (ii) Explain Explain why the spring spring balance balance shows shows a smaller smaller reading. reading. Terangkan mengapa neraca spring menunjukkan bacaan yang lebih kecil ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] (c) Complete Complete the followin following g sentence sentence by underl underlining ining the the correct correct words. words. Lengkapkan ayat berikut dengan menggariskan menggariskan perkataan yang betul. The weight of the water displaced in Diagram 3.2 is (less than | equal to | more than) the apparent loss in weight of the metal block. Berat air yang tersesar dalam Rajah 3.2 adalah (lebih kecil daripada | sama dengan | lebih besar daripada) kehilangan ketara berat blok logam itu. [1 mark / 1 markah ] -3

-1

(d) Calculate Calculate the volume volume of water water displace displaced. d. [Density [Density of water water = 1000 kgm kgm , g = 10 N kg ] -3 -1 Hitungkan isipadu air yang disesarkan disesarkan itu. [Ketumpatan air = 1000 kgm , g = 10 N kg ]

[2 mark / 2 markah ] [Lihat halaman sebelah

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PERAK 2011, question 3 Diagram 3.1 shows an insecticide spray. Rajah 3.1 menunjukkan sebuah penyembur racun serangga.


(i)

Which of the region P, Q or R will experience high pressure? P, Q and R R akan mengalami tekanan tinggi? Kawasan mana antara P, ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) Explain Explain why why the the region experience experiencess high high pressure? pressure? Terangkan mengapa kawasan tersebut mengalami tekanan tinggi? ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] (b) State State the region that experiences experiences the atmospheric atmospheric pressure? pressure? Kawasan mana yang mengalami tekanan atmosfera? ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ] (c) Explain Explain how the the insecticid insecticidee sprays sprays out of the the container container.. Terangkan bagaimana racun serangga sembur keluar daripada bekas. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ 2 marks / 2 markah ] (d) Name a physi physics cs principle principle involved involved in the above above observatio observation. n. Namakan prinsip fizik yang terlibat terlibat dalam pemerhatian di atas. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]


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JOHOR 2009, question 4 Diagrams 4.1 shows a pressure cooker for cooking food at high temperature. Rajah 4.1 menunjukkan sebuah periuk tekanan untuk memasak makanan pada suhu yang tinggi.


What What is mean meantt by press pressur ure? e? Apakah yang dimaksudkan dengan tekanan? ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(b) (i)

Explai Explain n why the gas gas pres pressur suree increa increases ses with with the the increa increase se of of the temper temperatu ature. re. Terangkan mengapa tekanan gas meningkat dengan pertambahan suhu. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………......

……………………………………………………………………………………………………………….. .... ………………………………………………………………………………………………………………...... [2 marks / 2 markah ] (ii) Based on the answer answer in 4(b) (i), (i), state state the the gas law law involved. involved. Berdasarkan jawapan jawapan dalam 4(b) (i), nyatakan hukum gas yang tarlibat. ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] (iii) State State the effect effect of high gas pressu pressure re on the boiling boiling point. point. Nyatakan kesan tekanan gas yang tinggi kepada kepada takat didih, ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] 5

(c) The air air pressure pressure of the the pressure pressure cooker cooker is 1.0 1.0 x 10 Pa, at the temperature of 27 ºC. What is the temperature of the 5 air, when the air pressure is 1.5 x 10 Pa? 5 Tekanan udara dalam periuk tekanan ialah ia lah 1.0 x 10 Pa, pada suhu 27 °C. Berapakah suhu bila tekanan udara 5 menjadi 1.5 x 10 Pa?

[2 mark / 2 mark markah ah] [Lihat halaman sebelah

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SELANGOR 2009, question 4 Diagram 4(a) shows a stone hanging from a spring balance.The reading of the spring balance is 3.0 N. When the stone is immersed in water, as shown in Diagram 4(b), the reading is 2.5 N. Rajah 4(a) menunjukkan sebiji batu tergantung pada sebuah neraca spring. Bacaan neraca iaiah 3.0 N. Apabila batu itu direndam ke da/am air seperti Rajah 4(b). Bacaannya ialah 2.5 N.


Rajah 4.2 Diagram Diagram 4.2 / Rajah

What What is mean meantt by by wei weigh ght? t? Apakah yang dimaksudkan dengan berat? ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(b)

What What is the weight weight of the object? object? Berapakah berat objek tersebut. tersebut.

[1 mark / 1 mark markah ah] (c) (c)

Anoth nother er forc forcee, F is acting on the object in Diagram 4.2. Name the force. Suatu daya, F bertindak ke atas objek tersebut pada Rajah 4.2. Namakan daya itu.

(d) (d)

Calcul lculat atee the the Hitung (i) (i)

magn magnit itud udee of of the the forc force, e, F magnitud daya , F

(ii)

volume of the object, given that the density of water, ρ= 1000 kg m Isipadu objek, di beri katumpatan air, air, ρ = 1000 kg m -3

[2 marks / 2 mark markah ah] -3


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JOHOR 2008, question 5 Diagram 5.1 shows a load placed on an ice block. Diagram 5.2 shows an ice block without the load. Rajah 5.1 menunjukkan beban diletakkan di atas blok ais. Rajah 5.2 menunjukkan blok ais talipa beban di atasnya..



What What is mean meantt by by den densi sity ty?? Apakah yang dimaksudkan dengan ketumpatan? ketumpatan? ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(b)

Explai Explain n why the ice bloc block k float float in in water water.. Jelaskan mengapa blok ais terapung terapung dalam air. air. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(c)

What What are the forces forces acting acting on on the the ice ice block? block? Apakah daya-daya yang bertindak ke atas blok ais? ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

( d)

Base on Diagram 5.1 and Diagram 5.2, Berdasarkan Rajah 5.1 dan Rajah 5.2 , (i)

Compar Comparee the the volume volume of water water displa displaced ced.. Bandingkan isipadu air yang tersesar tersesar.. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) (ii)

Compar Comparee the weigh weightt of of wate waterr disp displac laced. ed. Bandingkan berat air yang tersesar tersesar.. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(iii) (iii) Compar Comparee the buoya buoyant nt force. force. Bandingkan daya julangan. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] [Lihat halaman sebelah

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(iv) State State the relationship relationship between between buoyant buoyant force and the weight weight of water displaced displaced.. Nyatakan hubungan diantara doyajulangan dan berat berat air yang tersesar. tersesar. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] (v)

Name Name the princip principle le of physic physicss invol involves ves.. Namakan prinsip fizik yang terlibat. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]


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MRSM 2008, question 5 Diagrams 5.1 and diagram 5.2 show instrument K being used to measure pressure for a fixed mass of gas in an airtight container. container. Rajah 5.1 dan rajah 5.2 menunjukkan alat pengukur K digunakan untuk mengukur tekanan suatu jisim gas di dalam sebuah bekas kedap udara.


Rajah 5.2 Diagram Diagram 5.2 / Rajah

(a) (a) Name Name the the ins instr trum umen entt K. K Namakan alat K [1 mark / 1 mark markah ah] (b)

Base Based d on the the obs obser erva vati tion onss of Diagrams 5.1 and diagram 5.2 , Berdasarkan pemerharian pemerharian pada Rajah 5.1 dan rajah 5.2 , (i) (i)

Compa Compare re the the vol volum umee of of the the gas. gas. Bandingkan isipadu gas ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) (ii)

Compar Comparee the the press pressure ure of the the gas. gas. Bandingkan tekanan gas. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(iii) State State one assumption assumption made made while performin performing g the experiment experiment.. Nyatakan satu andaian yang dibuat semasa menjalankan menjalankan eksperimen. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]


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Using your your answers answers in (b) (i) (i) and (b) (ii), (ii), sketch sketch the graph graph of pressu pressure re against against volume volume of the gas. gas. Menggunakan jawapan anda dalam (b) (i) and (b) (ii), lakarkan graf tekanan tekanan melawan isipadu untuk gas tersebut.

[1 mark / 1 mark markah ah] (d)

Name the physics physics law which which is involv involved ed in the the above above observatio observation. n. Namakan hukum fizik yang terlibat terlibat dalam pemerhatian di atas. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(e)

Using the the kinetic kinetic theory of matter matter,, explain explain why pressure pressure changes changes when when the gas volume volume changes. changes. Dengan menggunakan teori kinetik kinetik jirim, terangkan mengapa tekanan berubah berubah bila isipadu gas berubah. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ 2 marks / 2 mark markah ah]


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SBP 2008, question 5 Diagram 5.1 and Diagram 5.2 show two solid spheres A and B with different density place in the water. Rajah 5.1 dan Rajah 5.2 menurjukkan dua ferapepjal A A dan B dengan ketunipatan yang berbeza diletakkan di dalam air .


(a) (a)


What What is mean meantt by by den densi sity ty?? Apakah yang dimaksudkan dengan ketumpatan? ketumpatan? ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

( b)

Based on Diagram 5.1 and Diagram 5.1 , Berdasarkan Rajah 5.1 dan Rajah 5.2 , (i) (i)

comp compar aree the the dens density ity of sphe sphere re A and sphere B bandingkan ketumpatan fera A dan fera B ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) (ii)

compar comparee the weigh weightt of of sphe sphere re A and sphere B bandingkan berat fera A dan fera B ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(iii) compare compare the weight weight of water water displace displaced d by sphere sphere A and sphere B bandingkan berat air yang tersesar oleh fera A dan sfera B ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] (iv) relate the the weight weight of sphere sphere and the the weight weight of water water displaced displaced hubungkaitkan antara berat fera dan berat air yang tersesar ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]


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relate relate the the weight weight of water water displ displace aced d and upthr upthrust ust hubungkaitkan antara berat air yang tersesar dan daya apungan ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(c)

Name Name the the phys physics ics princip principle le invo involve lved d in Diagram 5.1 and Diagram 5.2 . Namakan prinsip fizik yang terlibat terlibat dalam Rajah 5.1 dan Rajah 5.2. ……………………………………………………………………………………………………………………………………….. [ l mark mark / 1 markah ]

(d)

State State one one appli applicat cation ion of phys physics ics princ principle iple in in Diagram 5.1 and Diagram 5.2 . Nyatakan satu aplikasi fizik yang terlibat terlibat dalam Rajah 5.1 dan Rajah 5.2. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]


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MELAKA 2009, question 5 Diagram 5.1 and Diagram 5.2 show two mercury manometers in a laboratory. The gas supply in Diagram 5.1 has less pressure than diagram 5.2 Rajah 5.1 dan Rajah 5.2 menunjukkan dua manometer merkuri dalam sebuah makmal. Bekalan gas dalam Rajah 5.1 mempunyai tekanan yang lebih rendah dan tekanan gas da lam Rajah 5.2


(a)


Based on Diagram 5.1 and Diagram 5.2 Bendasarkan Rajah 5.1 dan Rajah 5.2 (i)

State State similarit similarities ies about the magnit magnitude ude and and the the directio direction n of pressures pressures Nyatakan kesamaan tentang magnitud dan anah tekanan tekanan Magnitude / Magnitud Magnitud ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] Directions / Arah Arah ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) (ii)

What What is the total total pres pressur suree at point point W Apakah jumlah tekanan pada titik W

[1 mark / 1 markah ] (iii) State State the relatio relationship nship between between pressure pressure at at W and the gas pressure Nyatakan hubungan antara tekanan pada W dengan tekanan gas ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]


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Based Based on the answers answers in 5(a)(ii) and 5(a)(iii), 5(a)(iii), write write words equation equation that that relate between between the atmosphe atmospheric ric pressure, pressure, mercury pressure pressure and the gas pressure. Bendasarkan jawapan di 5(a) (i) dan 5(a) (iii), tulis persamaan perkataan perkataan yang menghubungkan antara tekanan tekanan atmosfera, tekanan merkuri dan tekanan gas. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(c)

(i)

The gas gas supp supply ly is taken taken out. out. Descr Describe ibe cha change ngess on the the heig height ht of the merc mercury ury column column in both both diagr diagrams ams.. Bekalan gas di keluarkan. Terangkan Terangkan perubahan turus merkuri merkuri dalam kedua-dua rajah. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) Give Give one one reaso reason n to your your answ answer er in (c) (i). (i). Beri satu sebab untuk jawapan anda di (c) (i). ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]


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TERENGGANU 2010, question 5 Diagram 5.1 shows a water jet spurts out out from a hole in a tall vessel at a distance, distance, d1. Diagram 5.2 shows an oil jet spurts out from a hole at the same depth in a tall vessel at a distance, d 2. Rajah 5.1 menunjukkan pancutan air keluar dari satu lubang pada satu bekas tinggi sejauh d 1. Rajah 5.2 menunjukkan suatu pancutan minyak keluar dan satu lubang sejauh d 2 pada satu bekas tinggi pada kedalaman yang sama. sama.



What What is is the the mean meanin ing g of den densi sity ty?? Apakah yang dimaksudkan dengan ketumpatan? ketumpatan? ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

( b)

Observe Diagram 5.1 and Digaram 5.2 . Compare: Perhatikan Rajah 5.1 dan Rajah 5.2. Bandingkan: (i) (i)

Dens Densit ity y of of wat water er and and oil oil.. Ketumpatan air dan minyak. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) (ii) The The dis dista tan nce d1 and d2. Jarak d 1 , dan d 2. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] (iii) The pressure pressure produce produced d by the water water jet and and the oil oil jet. Tekanan yang dihasilkan oleh pancutan air dan pancutan minyak itu. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] (c)

Based Based on your answer answer in (b), state state the relations relationship hip between between the density density and the the pressure pressure of liquid. liquid. Berdasarkan jawapan jawapan anda di (b), nyatakan hubungan antara ketumpatan dan tekanan tekanan cecair. cecair. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]


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Diagram 5.3 shows the location of a house water tank. Rajah 5.3 menunjukkan kedudukan tangki air pada sebuak rumah.

Rajah 5.3 Diagram 5.3 / Rajah Explain why the water tank should be located on top of the roof. Terangkan mengapa tangki air diletakkan di alas bumbung rumah. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [3 mark / 3 markah ]


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TERENGGANU 2011, question 5 A water container in diagram 5.1 and diagram 5.2 is used to study about pressure in liquid. Diagram 5.1 shows water flowing out of a hole at the side of a container and Diagram 5.2 shows water flowing out of a hole at the side of another container. container. Bekas air di dalam Rajah 5.1 dan Rajah 5.2 digunakan untuk mengkaji tentang tekanan di dalam cecair. Rajah 5.1 menunjukkan air mengalir keluar melalui lubang pada sebelah sisi bekas dan Rajah 5.2 menunjukkan air mengalir keluar melalui lubang pada sisi bekas yang lain.



What What is is the meanin meaning g of of pressur pressure? e? Apakah maksud tekanan? ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

( b)

Observe Diagram 5.1 and Diagram 5.2 . Perhatikan Rajah 5.1 dan Rajah 5.2 (i)

Compar Comparee the depth depth of of the holes holes from from the the surface surface of the the water water.. Bandingkan kedalaman lubang dari permukaan air. air. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) Compare Compare the horizon horizontal tal distance distance travelled travelled by the jet jet of water water.. Bandingkan jarak mengufuk yang dilalui oleh pancutan air. air. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] (iii) Relate Relate the horizontal horizontal distanc distance e in (b) (ii) to the pressure pressure of water water at the hole. hole. Kaitkan jarak mengufuk dalam (b) (ii) terhadap tekanan air pada lubang. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] (iv) Relate Relate the pressur pressuree in the water water to the depth depth of the the water water.. Kaitkan tekanan di dalam cecair terhadap kedalaman air. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] [Lihat halaman sebelah

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State State another another fctor that affects affects the the pressu pressure re in a liquid. liquid. Nyatakan faktor lain yang mempengaruhi tekanan tekanan dalam cecair. cecair. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(d)

Explain Explain why the the wall wall of submarin submarinee is made made up of of strong strong and thick thick metal. metal. Terangkan mengapa dinding sebuah kapal selam dibuat daripada logam yang Icuat lagi tebal. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [2 mark / 2 markah ]


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SBP 2008, question 7 Diagram 7.1 shows a tyre of a car that is going to be used to travel from Kuala Lumpur to Kuala Terengganu. Terengganu. Rajah 7.1 menujukkan sebiji tayar kereta yang digunakan untuk perjalanan dari Kuala Lumpur ke Kuala Terengganu. Terengganu.


Afte Afterr the the long long jou journ rney ey,, Selepas satu perjalanan yang jauh, (i)

what what happen happen to the the temper temperatu ature re of the the air air in the tyr tyree Apakah yang berlaku kepada suhu udara di dalam dalam tayar. tayar. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) State State one other physical physical quantity quantity that will will also also change. change. Nyatakan satu kuantiti fizik lain yang turut berubah. berubah. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ] (b) Based Based on the answer answerss in (a) (i) and and (a) (ii), (ii), name name the gas law involve. involve. Berdasarkan jawapan jawapan dalam (a) (i) dan (a) (ii), namakan hukum gas yang terlibat. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ] (c)

Before a long journey journey,, the driver driver checked checked the the air pressure pressure of his his car tyres. tyres. The air pressur pressuree of the tyres tyres was 200 kPa at a temperature 27°C. After the journey, the air pressure of the tyres was found to have increased to 230 kPa. What is the temperature of the air in the tyre after the journey? [Assume the volume of the tyre is constant] Sebelum memulakan perjalanan, seorang pemandu telah memeriksa tekanan udara tayar keretanya. Tekanan udara tayar ialah 200 kPa pada suhu 27°C. Selepas perjalanan tersebut, tekanan udara dalam tayar didapati meningkat dengan tekanan udara 230 kPa. Berapakah suhu udara selepas perjalanan tersebut. [Anggapkan isipadu tayar tidak berubah]


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The ty tyre in in Diagram 7.1 is not suitable to be used on a muddy road. Suggest modifications to be done based on the characteristics given. Tayar di dalam Rajah 7.1 tidak sesuai digunakan di atas jalan berlumpur. Cadangkan pengubahsuaian yang perlu dilakukan berdasarkan berdasarkan ciri-ciri yang diberi. diberi. (i) (i)

Surf Surfac acee are areaa of of the the tyre tyre Luas permukaan tayar ………………………………………………………………………………………………………………...... Reason / sebab ………………………………………………………………………………………………………………...... [2 mark / 2 mark markah ah]

(ii) (ii) The trac track k of of the the tyre tyre Alur pada tayar ………………………………………………………………………………………………………………...... Reason / sebab ………………………………………………………………………………………………………………...... [2 mark / 2 mark markah ah]


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TERENGGANU 2008, question 7 Diagram 7.1 shows a dentist chair for children. The chair uses a hydraulic system. Rajah 7.l menunjukkan sebuah kerusi untuk mencabut gigi kanak-kanak. Kerusi ini menggunakan sistem hidraulik.


Name the physi physics cs principl principlee used used in in a hidraulic hidraulic system system.. Namakan prinsip fizik yang digunakan dalam sistem sistem hidraulik. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(b) Explain Explain how the the chair can can be lifted lifted up when when the pedal pedal is presse pressed d down? down? Terangkan bagaimana kerusi itu dapat dinaikkan apabila pedal ditekan ke bawah? ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ 2 marks / 2 markah ]

(c) Why the system system is less less effective effective if air bubbles bubbles are are present present in hydraulic hydraulic fluid? fluid? Mengapakah system itu kurang berkesan berkesan jika gelembung udara wujud wujud dalam cecair hidraulik? ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ] 2

2

(d) The cross cross sectional sectional area area of the big piston piston and the small small piston piston are 100 cm and 20 cm respectively. respectively. The mass of the chair is 20 kg. Calculate the force exerted on the small piston to lift up the child of 30 kg. 2 2 Luas keratan rentas omboh besar dan omboh kecil masing-masing adalah 100 cm dan 20 cm . Jisim kerusi ialah 20 kg. Hitungkan daya yang dikenakan pada omboh kecil untuk mengangkat seorang kanak-kanak berjisim 30 kg.

[2 marks / 2 mark markah ah] [Lihat halaman sebelah

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Suggest Suggest the modificati modifications ons required required to the size size of piston and and the size of the seat seat so that the chair chair is suitable suitable and and safe for the use of adults. Give the reasons. Cadangkan pengubahsuaian yang perlu dilakukan pada saiz omboh dan saiz tempat duduk supaya kerusi kerusi ini sesuai dan selamat digunakan untuk orang dewasa. Berikan sebab. (i)

Piston si size Saiz piston ………………………………………………………………………………………………………………...... Reason / sebab ………………………………………………………………………………………………………………...... [2 mark / 2 mark markah ah]

(ii)

Seat size Saiz tempat duduk: ………………………………………………………………………………………………………………...... Reason / sebab ………………………………………………………………………………………………………………...... [2 mark / 2 mark markah ah]


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SBP 2009, question 7 Diagram 7.1 shows a concrete water tank filled with water. Rajah 7.1 menunjukkan sebuah tangki konkrit yang diisi dengan air. air.


State State a factor factor that affects affects the the water water pressure pressure in the the tank. tank. Nyatakan satu faktor yang mempengaruhi mempengaruhi tekanan air di dalam tangki. ……………………………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………………………….. [ l mark / 1 markah ]

(b) (b) (i) (i)

Com Compare pare the the wat wateer pre presssure sure at P and Q Bandingkan tekanan air pada P dan Q ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) (ii)

Calcul Calculate ate the water water pressu pressure re at at Q. -3 (Density of water = 1000 kg m ) Hitungkan tekanan air pada Q -3 (Ketumpatan air = 1000 kg m )

[2 mark / 2 markah ] (c)

Diagram 7.2 shows water flows from the concrete tank to the house water tank. Rajah 7.2 menunjukkan air mengalir dan tangki konkrit ke tangki air di rumah.


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Rajah 7.2 Diagram 7.2 / Rajah (i)

What is the factor factor that that causes causes the water water to flow from from the concret concretee tank to to the water water tank in in the house? house? Apakah faktor yang menyebabkan air boleh boleh mengalir dan tangki konkrit ke tangki air di rumah? rumah? ………………………………………………………………………………………………………………....... ………………………………………………………………………………………………………………..... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) The flow of water water from the the concrete concrete tank tank to the the house house will stop stop at level level P. Pengaliran air dan tangki konkrit ke tangki air di rumah akan terhenti pada paras P. Explain Explain why the supply supply stops? stops? Terangkan mengapa pengaliranrya berhenti? ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [2 marks / 2 markah ] (d) (i)

Suggest Suggest two two modificat modifications ions that can can be done to ensur ensuree the water water flow continously continously to the house water water tank. tank. Cadangkan dua pengubahsuaian yang boleh dibuat untuk memastikan air dapat mengalir secara berterusan ke tangki di rumah kediaman. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [2 marks / 2 markah ]

(ii) Draw a water water tank tank that that can withstand withstand high high water water pressu pressure. re. Lukiskan tangki air yang boleh menampung tekanan tekanan yang tinggi.



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JOHOR 2011, question 7 Diagram 7.1 shows the cross-sectional the hydraulic brake system of the car. Rajah 7.1 menunjukkan keratan rentas sistem brek hidraulik bagi sebuah kereta .


(i) (i)

Name Name the physi physics cs prin princi cipl plee invo involv lved ed in in this this hyd hydra raul ulic ic sys syste tem. m. Namakan prinsip fizik yang terlibat dalam sistem hidraulik ini. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) Explain Explain why this brake brake system system is less less efficient efficient if there there is air bubble bubble trapped in in the brake brake tube. Terangkan mengapa sistem brek in kurang berkesan jika terdapat gelembung gelembung udara terperangkap di dalam salur brek. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [2 marks / 2 markah ] (b)

Mark the the direction direction of of piston piston on front front brake cylind cylinder er and rear rear brake brake cylinder cylinder in Diagram 7.1 when the brake pedal is pressed. Tandakan arah gerakan omboh pada silinderbrek silinderbrek hadapan dan silinder brek belakang pada rajah 7.1 apabila pedal brek ditekan. ditekan. [1 mark / 1 markah ]

(c)

A force force of 15 N is exerted on the the brake pedal. pedal. The cross-se cross-section ctional al area of master master piston, piston, front brake cylinde cylinderr and -4 2 -4 2 -4 2 rear brake cylinder are 5 x 10 m , 6 x 10 m and 5.5 x 10 m respectively. Satu daya 15 N dikenakan kepada pedal brek. Luas keratan rentas silinder utama, silinder brek hadapan dan -4 2 -4 2 -4 2 silinder brek belakang masing-masing adalah 5 x 10 m , 6 x 10 m dan 5.5 x 10 m . (i)

Calcul Calculate ate the the pres pressur suree exert exerted ed on the the oil in in the hydr hydraul aulic ic brake brake.. Hitungkan tekanan yang bertindak ke atas minyak minyak dalam brek hidraulik itu.

[2 marks / 2 markah ] [Lihat halaman sebelah

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(ii) Calculate Calculate the the force force that that exerted exerted at each each of front brake brake piston. piston. Hitungkan daya yang dikenakan pada setiapomboh setiapomboh brek hadapan.

[2 marks / 2 markah ] ( d)

Based on Diagram 7.1 , Berdasaran Rajah 7.1 , (i)

explain explain the modificati modification on to the size of master master piston piston so that the the brake system system can can function function effectiveiy effectiveiy.. Terangkan pengubahsuaian terhadap saiz omboh utama supaya sistem brek dapat berfungsi secara berkesan. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]

(ii) Explain Explain why rear brake brake cylinder cylinder on the right right and on the left left must have have same cross-sec cross-sectiona tionall area. Terangkan mengapa silinder brek belakang sebelah kanan den sebelah kiri mesti mempunyal luas lua s keratan rentas yang sama. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah ]


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