Physics 122/132 Multiple Choice Quiz #2 SOLUTIONS FOR POSTING
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Multiple Choice – Choose the best answer. (12 questions)
Dr. Julie J. Nazareth 05/21/2010 Versions A & B
Physics 122/132 Multiple Choice Quiz #2 SOLUTIONS FOR POSTING
1. A planet has four times the mass of the earth, but the acceleration due to gravity on the planet’s surface is the same as on the earth’s surface. The planet’s radius is
2Re
2. Complete the following statement: The term heat most accurately describes
the flow of energy due to a temperature difference.
3. Which system contains more atoms: 1 mol of helium (A = 4) or 1 mol of neon (A = 20)?
The have the same number of atoms.
4. Which contains more moles of material: 80 g of helium (A = 4) or 400 g of argon (A = 40)?
the helium
5. If an astronaut were exactly halfway between the Earth and the Moon, the net gravitational force exerted on the astronaut by these two objects would be
directed towards Earth.
6. An isobaric process is represented on a pressure-volume graph by which of the following curves?
a horizontal line
7. Heat is added to a sample of water in an insulated container. Which one of the following statements is necessarily true?
The type of change that will occur depends on the original temperature of the water.
8. A match is placed in an oxygen-filled cylinder that has a movable piston. The piston is moved so quickly that no heat escapes as the match ignites. What kind of change is demonstrated in this process?
an adiabatic change
9. An ideal gas goes from point A to point B on a PV diagram, following a hyberbolic curve. The pressure at point A is lower than the pressure at point B. How does the temperature at point A compare to the temperature at point B?
TA = TB
10. When the temperature of an ideal gas changes by 1.0 K, the change in the thermal energy of this gas is the same no matter what process was used to cause this temperature change.
True
11. Objects A and B are brought into close thermal contact with each other, but they are well isolated from their surroundings. Initially TA = 0°C and TB = 100°C. The specific heat of A is less than the specific heat of B. The objects will soon reach a common final temperature Tf. The final temperature is
Tf > 50°C
12. If the temperature of a gas has increased, heat must have been added to this gas.
False
Dr. Julie J. Nazareth 05/21/2010 Versions A & B