Questions from College Physics

Q: A 60.0-kg runner expends 3.00 x

A 60.0-kg runner expends 3.00 x 102 W of power while running a marathon. Assuming 10.0% of the energy is delivered to the muscle tissue and that the excess energy is removed from the body primarily by...

Q: If the light-bulbs in Quick Quiz 18.7 are

If the light-bulbs in Quick Quiz 18.7 are connected one by one in series instead of in parallel, what happens to (a) The brightness of the light-bulbs? (b) The individual currents in the light-bulbs?...

Q: The switch is closed in Figure 18.20. After a

The switch is closed in Figure 18.20. After a long time compared with the time constant of the circuit, what will the current be in the 2 - Ω resistor? (a) 4 A (b) 3 A (c) 2 A (d) 1 A (e)...

Q: Suppose you have 1 kg each of iron, glass, and

Suppose you have 1 kg each of iron, glass, and water, and all three samples are at 10°C. (a) Rank the samples from lowest to highest temperature after 100 J of energy is added to each by heat. (b) Ran...

Q: Calculate the slopes for the A, C, and E portions

Calculate the slopes for the A, C, and E portions of Figure 11.3. Rank the slopes from least to greatest and explain what your ranking means. (a) A, C, E (b) C, A, E (c) E, A, C (d) E, C, A Figure 11...

Q: For each of the following temperatures, find the equivalent temperature on

For each of the following temperatures, find the equivalent temperature on the indicated scale: (a) -273.15°C on the Fahrenheit scale, (b) 98.6°F on the Celsius scale, and (c) 1.00 x 102 K on the Fahr...

Q: On a clear, cold night, why does frost tend to

On a clear, cold night, why does frost tend to form on the tops, rather than the sides, of mailboxes and cars?

Q: Which one of the following statements is true? (a

Which one of the following statements is true? (a) The path on a PV diagram always goes from the smaller volume to the larger volume. (b) The path on a PV diagram always goes from the smaller pressure...

Q: Equal masses of substance A at 10.0°C and

Equal masses of substance A at 10.0°C and substance B at 90.0°C are placed in a well-insulated container of negligible mass and allowed to come to equilibrium. If the equilibrium temperature is 75.0°C...

Q: Clearly distinguish among temperature, heat, and internal energy.

Clearly distinguish among temperature, heat, and internal energy.