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.

Question

Want to see the full answer?

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.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

A spring with unstretched length of 14.3 cm has a spring constant of 4.63 N/m. The spring is lying on a horizontal surface, and is attached at one end to a vertical post. The spring can move freely around the post. The other end of the spring is attached to a puck of mass m. The puck is set into motion in a circle around the post with a period of 1.32 s. Assume the surface is frictionless, and the spring can be described by Hooke's law. (a) What is the extension of the spring as a function of m? (Assume x is in meters and m is in kilograms. Do not include units in your answer.) x = Find x (in meters) for the following masses. (If not possible, enter IMPOSSIBLE.) (b) m = 0.0700 kg m (c) m = 0.140 kg (d) m 0.180 kg m m (e) m = 0.210 kg m

A stuntman whose mass is 62 kg swings from the end of a 4.1-m-long rope along the arc of a vertical circle. Assuming that he starts from rest when the rope is horizontal, find the magnitudes of the tensions in the rope that are required to make him follow his circular path at each of the following points. (a) at the beginning of his motion KN (b) at a height of 1.5 m above the bottom of the circular arc KN (c) at the bottom of the arc KN

(a) A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 24.5° with the horizontal. A 30.0-kg piece of luggage is placed on the carousel, 7.46 m from the axis of rotation. The travel bag goes around once in 37.5 s. Calculate the magnitude of the force of static friction between the bag and the carousel. N (b) The drive motor is shifted to turn the carousel at a higher constant rate of rotation, and the piece of luggage is bumped to a position 7.94 m from the axis of rotation. The bag is on the verge of slipping as it goes around once every 30.5 s. Calculate the coefficient of static friction between the bag and the carousel.

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.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

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.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

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

Want to see the full answer?

Check out a sample textbook solution

See solution

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

Want to see the full answer?

Check out a sample textbook solution

See solution

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.

Want to see the full answer?

Chapter 15 Solutions