Case notes for native title, including: Milirrpum v Nabalco (1971) Mabo v Queensland (No 2) (1992) Western Australia v Commonwealth (1995) Western Australia v Ward (2002) Commonwealth v Yarmir...
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A piston–cylinder device with a set of stops initially contains 0.3 kg of of steam at 1.0 ° . volume. volume. Now the steam steam is cooled cooled.. Determine Determine the the compressi compression on work ifif the final final state state is (a (a) 1.0 MPa and 250°C and (b) 500 500 kP kPa. (c) Also determine the temperature at the final state in part (b ( b).
A gas is compressed compressed from an initial volume of 0.42 m3 to a final volume volume of 0.12 m3. , to the the rela relati tion on P = aV + b , where a =1200 kPa/m3 and b= 600 kPa. Calculate the work done during this process (a ( a) by plotting plotting the proces process s on a P-V diagram and finding finding the area area under under the process process curve curve and (b (b) by performing the necessary integrations.
A piston–cylinder device contains 0.15 kg of air initially initially at 2 MPa and 350°C. The air is first expanded isothermally to 500 kPa, then compressed compressed polytropically polytropically with a . , constant pressure to the initial initial state. Determine Determine the boundary work for each process and the the net net work of the cycle cycle..
A well-insulated ri id tank contains contains 5 k of a saturated li uid–va or mixture of water at l00 kPa. Initially, Initially, three-quarters of the mass is in the liquid phase. phase. An electric electric resistor resistor placed placed in the tank tank is connected connected to a 110-V 110-V source, source, and a current current of 8 A flows through the resistor when the switch is turned on. Determine how long long it . , diagram with respect to saturation lines.
Two tanks (Tank (Tank A and Tank Tank B) are a re separated separ ated by a partition. partiti on. Initially Init ially Tank Tank A contains 2-kg steam at 1 MPa and 300°C while Tank Tank B contains 3-kg saturated liquid–vapor liquid–vapor mixture with a vapor mass mass fraction of 50 percent. Now the partition is removed and established. If the pressure pressure at the final final state is 300 kPa, determine determine (a ( a) the temperature and quality of the the steam (if mixture) at the final state and (b) the amount of heat lost from the tanks.
. desired that the resistance heater be able to raise the air temperature in the the room from 7 to 23°C within 15 min. Assuming no heat heat losses from the room and an atmospheric pressure pressure of 100 kPa, determine the required power of the resistance resistance heater. heater. Assume constant constant specific heats heats at room temperature.
A mass of 15 k of air in a iston–c linder device is is heated from 25 to 77°C b assin current through a resistance heater inside the cylinder cylinder.. The pressure inside the cylinder cylinder is held constan constantt at 300 kPa kPa during the the process, process, and and a heat loss loss of 60 kJ occurs. occurs. Determine the electric energy supplied, in kWh.
A piston–cylinder device, whose piston piston is resting on a set of stops, initially initially contains contains 3 kg of air at 200 200 kPa and 27°C. The mass mass of the piston piston is such such that that a pressure pressure of 400 kPa is required to move it. Heat is now transferred transferred to the air until its volume volume doubles. Determine the work done done by the air and the total total heat transferr transferred ed to the air during during this proces process. s. Also show the process on a P-v diagram.
. . initially at a uniform temperature of 8°C and is is dropped into boiling water at 97°C. Taking the properties of the egg to be r 1020 kg/m3 and cp = 3.32 3.32 kJ kJ/k /kg g · °C, determine how much heat is is transferred to the egg by the time the average temperature of the egg rises to 80°C.
Two rigid tanks are connected by a valve. Tank Tank A contains 0.2 m3 of water at 400 kPa and 80 percent quality. quality. Tank B contains 0.5 m3 of water at 200 kPa and 250°C. The valve valve is now opened, opened, and and the two tanks tanks eventua eventually lly come come to the same same state. state. thermal thermal equilibrium equilibrium with the surroundin surroundings gs at 25°C.
