1. In fuid mechanic mechanics, s, this shows shows the pressure pressure o o a fuid decreas decreases es as the speed speed o the fuid increases. In addition, the pressure o a fuid decreases as the elevation increases. a. Clairut’s equation c. Maxwell equation b. Bernoulli’s equation d. Hdrofuid equation !. "uppose "uppose that ener# ener# $ is requir required ed to accelera accelerate te a car rom rom to v, ne#lectin# riction, how much ener# en er# would be required to increase the speed rom v to 2v % a. $ c. 3Q b. !$ d. &$ '. ( constant constant orce orce acts on a !)*+# obect obect and reduce reduces s its velocit velocit rom rom 1- ms to 1' ms in a time o / seconds. 0ind the orce. a. -12.50 N c. *-.) 2 b. *3.*3.- 2 d. *1-. *1-.& & 2 &. In optics, optics, this e4ect e4ect to the blurri blurrin# n# o ima#e ima#e produced produced on on a concave concave due to the conver#ence o ras ar rom the mirror to the other points on the principal axis. 5hat do ou call this e4ect% a. Spherical aberration c. 6arallax error b. 0ocal 0ocal diver#ence diver#ence d. "nell’s "nell’s e4ect ). "uppose "uppose that an obect obect is pushed with with a stead orce orce alon# a rictio rictionless nless surace. 5hen ou multipl the obect’s obect’s mass b the len#th o time or which it is pushed and then multipl the result b the obect’s acceleration over that period o time, ou #et a. Moment Momentum um b. 7elocit elocit c. Impulse d. ( meanin#less quantit −8
3. I the lieti lietime me o pions pions at rest rest in the the laborator laborator is
5.6 × 10
s, at what speed
must the pions travel with respect to the laborator so that their lietime is −8
9.4 × 10
s as measured b a lab observer%
a. .3&c .3&c b. .81c .81c c. .8/c .8/c d. 0.0c -. ( ball is swin#in swin#in# # in a circle circle on a strin# strin# when the the strin# len#th len#th is doubles, doubles, as as the same velocit, the orce on the strin# will be 99999999. a. :wice as much c. ;ne*ourth as much b. !al" as much d. :he same /. 0ind the an#le an#le between between two two vectors vectors < ( = 3i*->1)+ 3i*->1)+ and ? = 'i >& >& *1!+ a. 33.# de$ b. 1&3.11 de# c. 8.11 de# d. /./8 de# 8. :he outward outward orce orce exerted exerted b b the movin# movin# obect obect on the a#ent. a#ent. a. %entri"u$al c. Centripetal orce %entri"u$al reaction b. Central orce d. @ravitational reaction 1.5hat would happen i Aarth’s A arth’s #ravitational pull on the Moon suddenl stopped% a. 2othin# b. &he moon moon 'ould 'ould () () out o" the the *arth’s *arth’s orbit. orbit. c. :he moon moon would would all all into into the the Aarth. Aarth. d. :he moon moon woul would d all all into into the the "un. "un. 11.( ball is dropped rom rom a hei#ht o !3m above a tile foor with a coeBcient o restitution equal to .8!. Compute its ourth rebound hei#ht.
a. 1/.3!m c. 13.33m b. 1).-3m d. 11.!8m 1!.:he wor+ done b a orce o 1 dne exerted throu#h a distance o 1 cm. a. 5att c. oule d. 0oot*6ound b. *r$ 1'.5hat is the onl deca that has mass% a. +lpha deca) b. ?eta deca c. @amma deca d. 2;:( 1&.?ecause li#ht moves with a Dnite velocit, the position observed or an astronomical obect rom the rotatin# Aarth correspondin# to that a short time beore the instant o observation a. ?lac+ hole aberration c. Cosmic aberration b. ,lanetar) aberration d. "tellar aberration 1).It states that ever point on a primar waveront serves as the source o spherical secondar wavelets. a. Eortewe#*de 7ries 6rinciple c. Mersenne’s Faw b. 0arada A4ect d. !u)$en’s ,rinciple 13.(n Instrument used to detect radioactivit. It emits a series o audible clic+s i ioniGin# radiation passes throu#h it. a. "par+ Chamber c. Alectroscope b. ei$er %ounter d. @ola Cell 1-.:hese are electrons, defected b ma#netic and electric Delds, show much #reater penetration and produce less ioniGation. a. (lpha particle c. @amma particle b. Beta particle d. elta particle 1/.I the source o a sound wave moves throu#h a medium with a speed in excess o the speed o sound in that medium, a 999999 is produced. a. ltrasonic c. Shoc'a/e b. Inrasonic d. etonation 7elocit 18.:he resistance encountered b solids passin# throu#h fuids and the riction set up with liquids and #ases. a. 0luid riction c. iscosit) b. Jollin# riction d. Crac+in# !.:he unit KrenL was named ater ;sbourne Jenolds it is a unit o 999999. a. )namic /iscosit) c. Hdrolsis rate b. Chromatic aberration d. Jate o ormation !1.Ma#niin# #lasses are useul, because the create an enlar#ed< a. irtual ima$e behind the actual obect b. Jeal ima#e behind the actual obect c. 7irtual ima#e in ront o the actual obect d. Jeal ima#e in ront o the actual obect !!.:he point to which the ras parallel to the principal axis are brou#ht to the ocus a. 6rimar ocus c. ,rincipal "ocus b. "econdar ocus d. Maor ocus !'.( maor advanta#e o hdro#en usion reactor over a Dssion reactor is a. ( hdro#en usion is cooler that a Dssion reactor b. ( hdro#en usion reactor is easier to build than a Dssion reactor c. + "usion reactor produces no radioacti/e 'aste d. ( usion reactor can be used as a bomb in case o emer#enc
!&.:he occurrence o time dilation, as predicted b Ainstein’s special theor o relativit was demonstrated b< a. 6lacin# atomic cloc+s in #ravitational Delds o various intensities b. Measurin# the red shit o li#ht as it passes near the sun on its wa to us rom distant stars c. ;bservin# the curvature o space in a ast movin# vessel d. %omparin$ the readin$ o" an atomic cloc on an aircra"t 'ith the readin$ o" a similar cloc on *arth !).etermine the ma#nitude o the vector product o the two vectors< (= )i N ' > !+ and ?= *&i >8 >'+ a. units b. )' units c. 3& units d. &1 units !3.It is the maximum displacement o a particle in vibration relative to the position o the equilibrium a. 5averont b. 0requenc c. +mplitude d. 6eriod !-.Jeers to the quantit o visible radiation passin# per u nit time. a. 4uminous (u b. Fumen c. Candle d. Illuminance !/.:he closeness o an indication or readin# o a measurement device to the actual value o the quantit bein# measured. suall expressed as positive o ne#ative percent o ull scale output or readin# a. 6recision c. Compression b. +ccurac) d. A4ectiveness !8.:he ener# stored in a stretched elastic material such as a sprin# is 99999999. a. Internal ener# c. Einetic ener# b. Mechanical ener# d. *lastic potential ener$) '.0ind the theoretical speed o sound in ox#en at OC or a diatomic #as =1.&, and or ox#en M= '!. #mole. 2
a. 1.3!
× 10
ms
c. '.1-
m7s
d. 1.!3
2
b. 3.16
× 10
×
3
10
ms 3
× 10
ms
'1.(ccordin# to the Faw o Conservation o Momentum, when multiple obects collide in an ideal sstem, a. Aach obect has the same momentum ater the collision as beore b. Aach obect transers its momentum to an obect with which it collides c. Aach obect in the sstem has the same momentum d. &he total s)stem momentum does not chan$e as the collision taes place. '!.It occurs when refected sound waves return to the observer .1s o more ater the ori#inal wave reaches him, so that a distinct repetition o the ori#inal si#nal is perceived. a. 7ibration c. *cho b. "onic d. ?eats ''.0riction actors or both laminar and turbulent fows can be ound plotted in a a. 6schometric dia#ram c. "team table b. Mollier dia#ram d. 8ood) dia$ram
'&.:he point about which the product o the mass and moment arm sum up to Gero a. Center o #ravit c. Center o wei#ht b. %enter o" mass d. Center o moment ').:he ration o the an#le subtended at the ed#e b the ima#e to the an#le subtended b the obect a. (n#le o elevation c. (n#ular ma#niDcation b. +n$le o" e9cienc) d. (n#ular eBcac '3.:he theor which ascribes wave*li+e properties to particles is called< a. @eneral relativit c. "pecial relativit b. Quantum mechanics d. Classical mechanics '-.:he torque produced b the couple is a. Aqual to the ma#nitude o the two orces times the perpendicular distance b. *qual to the ma$nitude o" one o" the "orces times the perpendicular distance bet'een them c. Aqual to the ma#nitude o the two orces times the parallel distance between them d. Aqual to the ma#nitude o one o the orces times the parallel distance between them '/.:he matchin# o scale model and ull*scale prototpe results or a fuid dnamic phenomena involvin# surace area tension require equalit o a. :eber number c. 0roode number b. Cauch number d. Jenold’s number '8.9999999 is the resistive orce actin# between bodies that tends to oppose and damp out motion a. ra# b. "hear c. ;riction d. 7iscosit &.5hich o the ollowin# describes Eepler’s :hird Faw% a. :he planets move in ellipses havin# a common ocus situated at the sun. b. :he line which oins a planet to the sun sweeps over equal areas in equal intervals o time c. &he squares o" the periods o" the planets are proportional to the cubes o" their mean distances "rom the sun d. :he motion o stars, planets and comets &1.(n #eneral displacement o a ri#id bod can be represented b a translation plus a rotation. a. Mean "peed :heorem c. Charles’ :heorem b. ,oisson
a. :he onl condition or equilibrium b. :he Drst condition or equilibrium c. &he second condition "or equilibrium d. :he third condition or equilibrium &).5hen the pressure on an part o a conDned fuid is chan#ed, the pressure on the other part o the fuid is also chan#ed b the same amount. :his is +nown as< a. (rchimedes’ 6rinciple c. ,ascal’s ,rinciple b. ?ernoulli’s 6rinciple d. :orricelli’s 6rinciple &3.( 9999999 is the path ollowed b a proectile a. "pline c. 6roection b. Jan#e d. &raector) &-.:he wor+ done b a riction orce is a. (lwas ne#ative c. (lwas Gero b. +l'a)s positi/e d. Aither positive or ne#ative, dependin# upon the situation &/.5hen the velocit o an obect is tripled, another quantit which is tripled at the same time is the obect’s a. 8omentum c. Einetic ener# b. 6otential ener# d. Mass &8.:he resultant #ravitational orce actin# on the bod due to all other bodies in space. a. :ei$ht o" the bod) c. Mass o the bod b. 5or+ on the bod d. Aner# o the bod ).:he clinder o 99999999999 elements is the one considered to be the international standard or the mass o 1+#. a. (luminum*molbdenum c. ,latinum-iridium b. Cesium* deuterium d. Chromium*vanadium )1.:he Faw o niversal @ravitation states that< a. b. c.
d.
F ∝
1
m1 m2
1 ∝
d
F ∝ m1 m2 ∝ d F ∝
1
m1 m2
∝
F ∝ m1 m 2 ∝
2
2
d
2
1
d
2
)!.:he shit in the axis o spin o a rotatin# bod a. ,recision b. istortion c. eviation d. Alevation )'.5hat can cause an error in the measured position o the earth*based @6" receiver rou#hl equivalent to that caused b thousandth old de#radation in the stabilit o the atomic cloc+% a. &ime dilation c. eca transormation b. Jelative de#eneration d. Jelative deviation
)&.I the resultant orce actin# on a bod o constant mass is Gero, the bod’s momentum is< a. Increasin# b. decreasin# c. alwas Gero d. constant )).:he tpe o impact when the centers o mass o collidin# bodies are not located on the line o impact is called 999999 impact. a. Concentric b. Alliptic d. 6arabolic c. *ccentric )3.7ibrator which decadie out with time due to the e4ects o internal and external rictional orces a. 0ree vibration b. ndamped vibration c. 0orced vibration d. amped /ibration :he motion is maintained b #ravitational or elastic restorin# orces. 56. a. ;ree /ibration b. ndamped vibration c. 0orced vibration d. amped vibration )/.It occurs when two sources o sli#htl di4erent requencies are sounded at the same time. a. 7ibration c. Acho d. "onic b. Beats )8.( hi#hl concentrated pressure wave produced when an obect fies aster than the speed o sound. a. "upersonic c. ltrasonic b. "onic splash d. Sonic boom 3.(n instrument or comparin# the luminous intensities o li#ht sources. a. ,hotometer b. 0oot candle meter c. Fuminous meter d. Fumina meter 31.:he normal power o a ull accommodated human ee is 999999999 diopters. a. -).& b. )&.d. &).c. 6.5 3!.ull dali#ht #ives an illuminance o about< a. 8,3c b . #>?000"c c. 83,c d. 83c 3'.irect dali#ht #ives an illuminance o about< a. #?>00"c b. 83,c c. 83,c d. 83c 3&.:he luminous fux in a unit solid an#le rom a point source o one candle a. Candela b. Fux c. 4umen d. Fambert 3).In nuclear phsics, what particle contains ! protons and ! neutrons% a. +lpha particle c. elta particle b. ?eta particle d. @amma particle 33."ome li#ht beams will ollow curve paths a. nder no circumstances b. 5hen measured inside a spaceship that is coastin# at hi#h speed c. :hen measured in the presence o" an etreme $ra/itational =eld d. 5hen measured rom a reerence rame that is acceleratin# 3-.:he ne#ative ratio o the relative velocit ater a collision to the relative velocit beore collision a. CoeBcient o elasticit c. CoeBcient o collision b. CoeBcient o velocit d. %oe9cient o" restitution
3/.( bloc+ with a mass o 1+# is bein# pushed b an unbalanced orce and creates certain acceleration. 5hat will happen to the acceleration i the mass o the 1+# is doubled% a. &he acceleration 'ill become hal" o" the ori$inal acceleration b. :he acceleration will become twice o the ori#inal acceleration c. :he acceleration will be the same as the ori#inal acceleration d. 2one o the above 38.5hat reers to a ne#li#ible bod when compared to the distances involved re#ardin# its motion% a. $uar+s c. (tomic substance b. ,article d. Alement -.6ositivel char#ed helium nuclei defected b ma#netic and electric Delds, show small penetration, and produce #reat ioniGation a. +lpha particles c. @amma particles b. ?eta particles d. elta particles -1.6ersistence o vision is the principle behind a. %inema b. "pectrum c. Colors d. (udition -!.(n electroma#netic shoc+ wave produced when a char#ed particle passes throu#h a substance at a velocit #reater than the velocit o li#ht in that surace -'.7enturi meter is an instrument used to measure 999999999 a. 7elocit o fow c. elocit) o" (uid inside a pipe b. ra# orce d. 0luid reaction -&.(t an an#ular velocit 999999 will the stress in a rotatin# steel rin# equal to 1)M6a i its mean radius is !!mm. :he densit o steel is -/) +#
m
3
a. !3/ rads c. >2 rad7s b. /!3 rads d. /3! rads -).5hat is the pressure at the bottom o a tan+ 'm deep Dlled with mercur% Qdensit o H#=1'.3#ccR a. '.3 M6a b. !8&.' +6a d. !3-.' E6a c. 8,a -3.( proectile wei#hin# 1 pounds stri+es the concrete wall o a ort with an impact velocit o 1! ts. :he proectile comes to rest in .1s, havin# penetrated the /*oot thic+ wall to a distance o 3 t. 5hat is the avera#e orce exerted on the wall b the proectile% 5
a.
3.57 × 10 lbs
b.
3.75 × 10 lbs
5
c.
37.5 × 10 lbs
d.
35.7 × 10 lbs
5
5
--.How much wor+ is done b #ravit when a )*+# obect moves 1.)m horiGontall and then moves 'm verticall upward a. 1) c. -) d. *-) b. -150@ -/.Calculate the wavelen#th o a !*+# truc+ travellin# with a speed o &ms. − 39
a.
2.21 × 10
b.
2.12 × 10
−39
−39
m
c.
8.28 × 10
m
d.
2.21 × 10
−39
m m
-8.Compute the acceleration due to #ravit at a place where a simple pendulum 1-.' cm lon# ma+es !3 ccles in &)8.3s. 2
a.
9.75 m / s
b.
210.10 m / s
2
c.
21.1 m/ s
2
2
d.
9 7 .5 m / s
/.( 1)) +# car accelerates rom rest to 3 +ph in 8s. How much power is supplied b the en#ine to accelerate the car% a. 3.&+5 b. &.&+5 c. /.&+5 d. 2.: /1.5hat is the photon ener# or an inrared wave with requenc o 1S1! HG% 34
a.
10.6 × 10
b.
6.63 × 10
c.
−21
6.63 × 10
−34
@ −21
d.
10.6 × 10
/!.( wave in which the particles o the material move up and down as the wave #oes rom let to ri#ht is called 999999. a. "tandin# wave c. lon#itudinal wave b. :ransverse wave d. None o" the abo/e /'.( propert o matter that provides a quantitative measure o its resistance to a chan#e in velocit. a. Momentum c. Inertia b. 8ass d. Jestitution /&.It occurs when two bodies collide with each other durin# a ver short period o time, causin# relativel lar#e orces to be exerted between the bodies. a. Impulse b. Collision c. Impact d. Jestitution /).5hat is the absorption coeBcient o an acoustic plaster% a. 1 c. .'& d. .1) b. 0.25 /3.5hat is the minimum coeBcient o static riction necessar to allow a penn to rotate alon# with a
30
1 3
rpm record Qd=.'mR, when the penn is placed
on the outer ed#e o the record% a. .!1 c. .1/ d. .'& b. 0.15 /-.(n imperection wherein the ras arther rom the axis are refected to cross the axis nearer to the mirror that those close to the axis. a. (sti#matism c. Mopia b. Spherical aberration d. istortion //.:he smallest an#ular distance at which the ima#es o two point sources can be reco#ni8Ged as separate. a. iopters c. 6ower o lens b. ;ptical distance d.
relative to the earth. 5hat is the len#th o the meter stic+, as measured b an observer bac+ on earth% a. ./m b. .8m d. c. 0.>m .-m 81.( measure o the resistance o a bod to an#ular acceleration a. 8oment o" inertia b. Moment o mass c. Mass d. Moment o area 8!.Mechanical wor+ can be deDned in terms o a. :he product o orce and mass b. :he product o orce and speed c. :he product o orce and acceleration d. &he product o" "orce and displacement 8'.(n instrument which measures a constant raction o radiant fux and which is calibrated in units o illuminance. a. 6hotometer c. Fuminous meter b. ;oot candle meter d. Fumina meter 8&.( double prism that produces deviation without dispersion a. Chromatic prism b. +chromatic prism c. Monochromatic prism d. ual prism 8).5hat e4ect do the ollowin# orces have on a point 12, 'O A o 2 !2 /O " o A 1)2 &)O " o 5 1-)2, !O 5 o 2 )2 due north% 83.( cable /m lon# wei#hin# 1.)+#m has tension o -)+# at its ends. Compute the sa# o the cable. 8-.( certain cable is suspended between two supports at the same elevation and 1)m apart. :he load is /2 per meter horiGontal len#th includin# the wei#ht o the cable. :he sa# o the cable is )m. Calculate the total len#th o the cable. a. 1).3/-3 c. 1).&-)/ b. 1).'8/3 d. 150.32 8/.5hat illumination is provided on the table surace located 3m directl below a 1/ lumen lamp% a. '8.- candlem! c. 1).8! candlem! b. 3.#6 candle7m2 d. 1'.!3 candlem! 88.0ind the #ravitational orce the Aarth exerts on the Moon. :he Aarth’s mass is 32
7.36 × 10
+# and the Moon’s orbit is an avera#e o 20
a.
1.99 × 10 N
× 10 N
8
m in radius.
20
c. !.&)
× 10 N
d. '.83
× 10 N
20
b. &./&
3.84 × 10
20
1. (n airplane lands on a carrier dec+ at 1)mihr and is brou#ht to a stop uniorml b an arrestin# device in -t. 0ind the acceleration. a. &/.& ts! c. '&.3 ts! b. *&/.& ts! d. -3.> "t7s2
