Questions from College Physics

Q: Long-term space missions require reclamation of the oxygen in the

Long-term space missions require reclamation of the oxygen in the carbon dioxide exhaled by the crew. In one method of reclamation, 1.00 mol of carbon dioxide produces 1.00 mol of oxygen, with 1.00 mo...

Q: The pressure in a constant-volume gas thermometer is 0.

The pressure in a constant-volume gas thermometer is 0.700 atm at 1.00 x 102°C and 0.512 atm at 0°C. (a) What is the temperature when the pressure is 0.0400 atm? (b) What is the pressure at 450°C?

Q: The boiling point of liquid hydrogen is 20.3 K at

The boiling point of liquid hydrogen is 20.3 K at atmospheric pressure. What is this temperature on (a) The Celsius scale and (b) The Fahrenheit scale?

Q: Will an ice cube wrapped in a wool blanket remain frozen for

Will an ice cube wrapped in a wool blanket remain frozen for (a) Less time, (b) The same length of time, or (c) A longer time than an identical ice cube exposed to air at room temperature?

Q: Two rods of the same length and diameter are made from different

Two rods of the same length and diameter are made from different materials. The rods are to connect two regions of different temperature so that energy will transfer through the rods by heat. They can...

Q: How much energy is required to change a 40.-g ice

How much energy is required to change a 40.-g ice cube from ice at -10.°C to steam at 110.°C?

Q: Stars A and B have the same temperature, but star A

Stars A and B have the same temperature, but star A has twice the radius of star B. (a) What is the ratio of star A’s power output to star B’s output due to electromagnetic radiation? The emissivity o...

Q: By visual inspection, order the PV diagrams shown in Figure 12

By visual inspection, order the PV diagrams shown in Figure 12.5 from the most negative work done on the system to the most positive work done on the system. (a) a, b, c, d (b) a, c, b, d (c) d, b, c,...

Q: Identify the paths A, B, C, and D in

Identify the paths A, B, C, and D in Figure 12.11 as isobaric, isothermal, isovolumetric, or adiabatic. For path B, Q = 0. Figure 12.11:

Q: Three engines operate between reservoirs separated in temperature by 300 K.

Three engines operate between reservoirs separated in temperature by 300 K. The reservoir temperatures are as follows: Engine A: Th = 1 000 K, Tc = 700 K Engine B: Th = 800 K, Tc = 500 K Engine C: Th...