Physics 1 Midterm Answers

Chapter 15 Practice Quiz

1. A bicycle pump contains air at STP. As the tire is pumped up, the volume of air decreases by 50% with each stroke. What is the new pressure of air (in atm) in the chamber after the first stroke, assuming no temperature change? A). 2

2. A pebble size object and a bowling ball size probe from a spaceship land on a large asteroid that is far from any star. After a long period of time has passed, it is highly probable that the pebble and the probe C). are in thermal equilibrium with one another.

3. A temperature difference of 9 Celsius degrees is equal to a Fahrenheit temperature difference of C). 16 Fahrenheit Degrees

4. A square plate has an area of 29.00 cm2 at 20.0°C. It will be used in a low temperature experiment at T = 10.0K where it must have an area of 28.00 cm2. What area must be removed form the plate at 20.0°C for it to have the correct area at 10.0 K? (The coefficient of linear expansion is 10 ´ 10-6 (°C)-1.) E). 0.921 CM^2

5. Angela claims that she wears a cylindrical-shaped hollow gold bracelet because it expands less than a solid one with a change in temperature. Clarissa claims that a cylindrical-shaped solid gold bracelet expands less than a hollow one. Which one, if either, is correct? E). Neither

6. In order for two objects to have the same temperature, they must 1). Be In Thermal Equilibrium

7. Two thermometers are calibrated, one in degrees Celsius and the other in degrees Fahrenheit. At what temperature (in kelvins) do their readings measure the same temperature? B). 233.15

8. A pressure of 10 mm Hg is measured at the triple-point of water using a constant-volume gas thermometer, what will the pressure be (in mm Hg) at 50°C? D). 11.8

9. Two bodies can be in thermal equilibrium with one another when they are at the same temperature even if they

10. An auditorium has dimensions 10 m ´ 10 m ´ 60 m. How many moles of air fill this volume at STP? D). 2.7 X10^5

11. An auditorium...