The thermal energy required to remove from the body per second in order to keep the body temperature constant, if a marathon runner is running a marathon and an opposing force by the air does − 150 J of work per second and 1000 J of internal chemical energy is converted into the thermal energy each second.

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Answer 1

Question

Chapter 15, Problem 57P

(a)

To determine

The thermal energy required to remove from the body per second in order to keep the body temperature constant, if a marathon runner is running a marathon and an opposing force by the air does −150 J of work per second and 1000 J of internal chemical energy is converted into the thermal energy each second.

(b)

To determine

The rate of water loss from the body of the runner described in part (a) if 50% of the energy is lost due to evaporation.

(c)

To determine

The mass of water lost in 3 hours from the runner’s body described in the above parts.

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PART III - RESISTORS IN PARALLEL Consider (but do not yet build) the circuit shown in the circuit diagram to the left, which we will call Circuit 3. Make sure you are using Bert bulbs. You may want to wire two batteries in series rather than use a single battery. 7. Predict: a) How will the brightness of bulb B3A compare to the brightness to bulb B3B? c) X E B3A b) How will the brightness of bulb BзA compare to the brightness of bulb B₁ from Circuit 1? How will the currents at points X, Y, and Z be related? www d) How will the current at point X in this circuit compare to the current at point X from Circuit 1? Y Z B3B www

PART II - RESISTORS IN SERIES Consider (but do not yet build) the circuit shown in the circuit diagram to the left, which we will call Circuit 2. Make sure you are using Bert bulbs. You may want to wire two batteries in series rather than use a single battery. 4. Predict: a) How will the brightness of bulb B₂ compare to the brighness to bulb B2B? X B2A E Y B2B Ꮓ b) How will the brightness of bulb B2A compare to the brightness of bulb B₁ from Circuit 1? c) How will the currents at points X, Y, and Z be related? d) How will the current at point X in this circuit compare to the current at point X from Circuit 1?

Answer 2

Question

Chapter 15, Problem 57P

(a)

To determine

The thermal energy required to remove from the body per second in order to keep the body temperature constant, if a marathon runner is running a marathon and an opposing force by the air does −150 J of work per second and 1000 J of internal chemical energy is converted into the thermal energy each second.

(b)

To determine

The rate of water loss from the body of the runner described in part (a) if 50% of the energy is lost due to evaporation.

(c)

To determine

The mass of water lost in 3 hours from the runner’s body described in the above parts.

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Answer 3

Question

Chapter 15, Problem 57P

(a)

To determine

The thermal energy required to remove from the body per second in order to keep the body temperature constant, if a marathon runner is running a marathon and an opposing force by the air does −150 J of work per second and 1000 J of internal chemical energy is converted into the thermal energy each second.

(b)

To determine

The rate of water loss from the body of the runner described in part (a) if 50% of the energy is lost due to evaporation.

(c)

To determine

The mass of water lost in 3 hours from the runner’s body described in the above parts.

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Answer 4

Question

Chapter 15, Problem 57P

(a)

To determine

The thermal energy required to remove from the body per second in order to keep the body temperature constant, if a marathon runner is running a marathon and an opposing force by the air does −150 J of work per second and 1000 J of internal chemical energy is converted into the thermal energy each second.

(b)

To determine

The rate of water loss from the body of the runner described in part (a) if 50% of the energy is lost due to evaporation.

(c)

To determine

The mass of water lost in 3 hours from the runner’s body described in the above parts.

Expert Solution & Answer

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Answer 5

Chapter 15, Problem 57P

(a)

To determine

The thermal energy required to remove from the body per second in order to keep the body temperature constant, if a marathon runner is running a marathon and an opposing force by the air does −150 J of work per second and 1000 J of internal chemical energy is converted into the thermal energy each second.

(b)

To determine

The rate of water loss from the body of the runner described in part (a) if 50% of the energy is lost due to evaporation.

(c)

To determine

The mass of water lost in 3 hours from the runner’s body described in the above parts.

Answer 6

Chapter 15, Problem 57P

(a)

To determine

The thermal energy required to remove from the body per second in order to keep the body temperature constant, if a marathon runner is running a marathon and an opposing force by the air does −150 J of work per second and 1000 J of internal chemical energy is converted into the thermal energy each second.

Answer 7

Chapter 15, Problem 57P

(a)

To determine

The thermal energy required to remove from the body per second in order to keep the body temperature constant, if a marathon runner is running a marathon and an opposing force by the air does −150 J of work per second and 1000 J of internal chemical energy is converted into the thermal energy each second.

Answer 8

(b)

To determine

The rate of water loss from the body of the runner described in part (a) if 50% of the energy is lost due to evaporation.

Answer 9

(b)

To determine

The rate of water loss from the body of the runner described in part (a) if 50% of the energy is lost due to evaporation.

Answer 10

(c)

To determine

The mass of water lost in 3 hours from the runner’s body described in the above parts.

Answer 11

(c)

To determine

The mass of water lost in 3 hours from the runner’s body described in the above parts.

Answer 12

Expert Solution & Answer

Answer 13

Expert Solution & Answer

Answer 14

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Answer 15

Ch. 15 - Review Question 15.1 Imagine that a balloon...Ch. 15 - Prob. 2RQ Ch. 15 - Prob. 3RQ Ch. 15 - Review Question 15.4 Describe two situations in...Ch. 15 - Prob. 5RQ Ch. 15 - Review Question 15.6 Why are the units for...Ch. 15 - Prob. 7RQ Ch. 15 - An ideal gas in a container is separated with a...Ch. 15 - 2. A container of gas has a movable piston, which...Ch. 15 - Prob. 3MCQ

Solution Summary: The author explains how the internal energy of a closed system is equal to the heat supplied by the environment and work done on the system.

Concept explainers

The rate of water loss from the body of the runner described in part (a) if 50% of the energy is lost due to evaporation.

The mass of water lost in 3 hours from the runner’s body described in the above parts.

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Chapter 15 Solutions