Which system (or systems) has the largest average translational kinetic energy p
ID: 3162763 • Letter: W
Question
Which system (or systems) has the largest average translational kinetic energy per molecule? a. 2 mol of He at p = 2 atm. T = 300 K b. 1 mol of N_2 at p = 0.5 atm, T = 600 K c. 1 mol of He at p = 1 atm. T = 300 K d. 2 mol of N_2 at p = 0.5 atm. T = 450 K e. 1 mol of Ar at p = 0.5 atm, T = 450 K f. 2 mol of Ar at p = 2 atm. T = 300 K If two objects are in thermal equilibrium with each other a. they cannot be moving. b. they cannot be at different temperatures. c. they cannot be undergoing an elastic collision. d. they cannot be have different pressures. e. they cannot be falling in the Earth's gravitational field. Heat has the same units as a. temperature, b. work. c. energy/time, d. heat capacity, e. energy/volume. It's a hot day and your air conditioner is broken. Your roommate says, "Let's open the frigerator door and cool this place off." Will this work? a) Yes. b) No. c) It might, but it will depend on how hot the room is and the performance of the refrigerator) The amount of heat necessary to raise the temperature of 1 gram of water by 1 degree C is referred to as the a. calorie, b. kilocalorie. c. British thermal unit. d. joule. e. Huxel. The reason ocean temperatures do not vary drastically is that a. water has a relatively high rate of heat conduction. b. water is a good radiator. c. water has a relatively high specific heat. d. water is a poor heat conductor. Phase changes occur a. as the temperature decreases. b. as the temperature increases. c. as the temperature remains the same. d. all of the above A gas is quickly compressed in an isolated environment. During the event, the gas exchanged no heat with its surroundings. This process is a. isothermal. b. isochoric. c. isobaric. d. adiabatic. A chunk of ice (T = -20 degree C) is added to a thermally insulated container of cold water (T = 0 degree C). What happens in the container? a. The ice melts until thermal equilibrium is established. b. Some of the water freezes and the chunk of ice gets larger c. The water cools down until thermal equilibrium is established. d. None of these will occur.Explanation / Answer
1.
2. If two objects are in thermal equilibrium: they must be at the same temperature
3. Heat has the same unit as work.
4. No. it will warm up the room a little bit as it is basically a heat pump.
5. Calorie
6. Water has a relatively high specific heat.
7. Phase transistion can occur for all the above.
8. adiabatic
9. The ice melts till thermal equilibrium is reached.
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