Whether it is possible to transform mechanical energy into heat or internal energy completely and whether the reverse may happen or not.

Question

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Answer 1

Question

Chapter 20, Problem 1Q

To determine

Whether it is possible to transform mechanical energy into heat or internal energy completely and whether the reverse may happen or not.

Expert Solution & Answer

Answer to Problem 1Q

It is possible to transform mechanical energy into heat or internal energy completely, but the reverse may not happen.

Explanation of Solution

It is possible to convert all the mechanical energy into heat or internal energy. An example for such a case is that bringing an object moving on a surface to rest by means of friction. In such a case, the whole mechanical energy is dissipated as heat due to the friction force which oppose the motion of the object.

The complete transformation of heat into mechanical energy does not happen in the physical world. It can be assumed to happen in some ideal cases such as the adiabatic expansion of an ideal gas. According to second law of thermodynamics, it is not possible for a self-acting system to convert heat energy completely to work or mechanical energy. Suppose a process of an explosion lead to the conversion of the internal energy of the system to mechanical energy to a high extend, but some energy would be lost in the form of heat. Thus mechanical energy can be transformed into heat or internal energy completely, but the reverse may not happen since it violates the second law of thermodynamics.

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a Carnot refrigerator requires a work input of only 230 J to extract 346 J of heat from the cold reservoir. Doesn’t this discrepancy imply a violation of the law of conservation of energy? Explain why or why not.

Answer 2

Question

Chapter 20, Problem 1Q

To determine

Whether it is possible to transform mechanical energy into heat or internal energy completely and whether the reverse may happen or not.

Expert Solution & Answer

Answer to Problem 1Q

It is possible to transform mechanical energy into heat or internal energy completely, but the reverse may not happen.

Explanation of Solution

It is possible to convert all the mechanical energy into heat or internal energy. An example for such a case is that bringing an object moving on a surface to rest by means of friction. In such a case, the whole mechanical energy is dissipated as heat due to the friction force which oppose the motion of the object.

The complete transformation of heat into mechanical energy does not happen in the physical world. It can be assumed to happen in some ideal cases such as the adiabatic expansion of an ideal gas. According to second law of thermodynamics, it is not possible for a self-acting system to convert heat energy completely to work or mechanical energy. Suppose a process of an explosion lead to the conversion of the internal energy of the system to mechanical energy to a high extend, but some energy would be lost in the form of heat. Thus mechanical energy can be transformed into heat or internal energy completely, but the reverse may not happen since it violates the second law of thermodynamics.

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Answer 3

Question

Chapter 20, Problem 1Q

To determine

Whether it is possible to transform mechanical energy into heat or internal energy completely and whether the reverse may happen or not.

Expert Solution & Answer

Answer to Problem 1Q

It is possible to transform mechanical energy into heat or internal energy completely, but the reverse may not happen.

Explanation of Solution

It is possible to convert all the mechanical energy into heat or internal energy. An example for such a case is that bringing an object moving on a surface to rest by means of friction. In such a case, the whole mechanical energy is dissipated as heat due to the friction force which oppose the motion of the object.

The complete transformation of heat into mechanical energy does not happen in the physical world. It can be assumed to happen in some ideal cases such as the adiabatic expansion of an ideal gas. According to second law of thermodynamics, it is not possible for a self-acting system to convert heat energy completely to work or mechanical energy. Suppose a process of an explosion lead to the conversion of the internal energy of the system to mechanical energy to a high extend, but some energy would be lost in the form of heat. Thus mechanical energy can be transformed into heat or internal energy completely, but the reverse may not happen since it violates the second law of thermodynamics.

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Answer 4

Question

Chapter 20, Problem 1Q

To determine

Whether it is possible to transform mechanical energy into heat or internal energy completely and whether the reverse may happen or not.

Expert Solution & Answer

Answer to Problem 1Q

It is possible to transform mechanical energy into heat or internal energy completely, but the reverse may not happen.

Explanation of Solution

It is possible to convert all the mechanical energy into heat or internal energy. An example for such a case is that bringing an object moving on a surface to rest by means of friction. In such a case, the whole mechanical energy is dissipated as heat due to the friction force which oppose the motion of the object.

The complete transformation of heat into mechanical energy does not happen in the physical world. It can be assumed to happen in some ideal cases such as the adiabatic expansion of an ideal gas. According to second law of thermodynamics, it is not possible for a self-acting system to convert heat energy completely to work or mechanical energy. Suppose a process of an explosion lead to the conversion of the internal energy of the system to mechanical energy to a high extend, but some energy would be lost in the form of heat. Thus mechanical energy can be transformed into heat or internal energy completely, but the reverse may not happen since it violates the second law of thermodynamics.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 20, Problem 1Q

To determine

Whether it is possible to transform mechanical energy into heat or internal energy completely and whether the reverse may happen or not.

Expert Solution & Answer

Answer to Problem 1Q

It is possible to transform mechanical energy into heat or internal energy completely, but the reverse may not happen.

Explanation of Solution

It is possible to convert all the mechanical energy into heat or internal energy. An example for such a case is that bringing an object moving on a surface to rest by means of friction. In such a case, the whole mechanical energy is dissipated as heat due to the friction force which oppose the motion of the object.

The complete transformation of heat into mechanical energy does not happen in the physical world. It can be assumed to happen in some ideal cases such as the adiabatic expansion of an ideal gas. According to second law of thermodynamics, it is not possible for a self-acting system to convert heat energy completely to work or mechanical energy. Suppose a process of an explosion lead to the conversion of the internal energy of the system to mechanical energy to a high extend, but some energy would be lost in the form of heat. Thus mechanical energy can be transformed into heat or internal energy completely, but the reverse may not happen since it violates the second law of thermodynamics.

Answer 6

Chapter 20, Problem 1Q

To determine

Whether it is possible to transform mechanical energy into heat or internal energy completely and whether the reverse may happen or not.

Expert Solution & Answer

Answer to Problem 1Q

It is possible to transform mechanical energy into heat or internal energy completely, but the reverse may not happen.

Explanation of Solution

It is possible to convert all the mechanical energy into heat or internal energy. An example for such a case is that bringing an object moving on a surface to rest by means of friction. In such a case, the whole mechanical energy is dissipated as heat due to the friction force which oppose the motion of the object.

The complete transformation of heat into mechanical energy does not happen in the physical world. It can be assumed to happen in some ideal cases such as the adiabatic expansion of an ideal gas. According to second law of thermodynamics, it is not possible for a self-acting system to convert heat energy completely to work or mechanical energy. Suppose a process of an explosion lead to the conversion of the internal energy of the system to mechanical energy to a high extend, but some energy would be lost in the form of heat. Thus mechanical energy can be transformed into heat or internal energy completely, but the reverse may not happen since it violates the second law of thermodynamics.

Answer 7

Chapter 20, Problem 1Q

To determine

Whether it is possible to transform mechanical energy into heat or internal energy completely and whether the reverse may happen or not.

Answer 8

Expert Solution & Answer

Answer to Problem 1Q

It is possible to transform mechanical energy into heat or internal energy completely, but the reverse may not happen.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

It is possible to convert all the mechanical energy into heat or internal energy. An example for such a case is that bringing an object moving on a surface to rest by means of friction. In such a case, the whole mechanical energy is dissipated as heat due to the friction force which oppose the motion of the object.

The complete transformation of heat into mechanical energy does not happen in the physical world. It can be assumed to happen in some ideal cases such as the adiabatic expansion of an ideal gas. According to second law of thermodynamics, it is not possible for a self-acting system to convert heat energy completely to work or mechanical energy. Suppose a process of an explosion lead to the conversion of the internal energy of the system to mechanical energy to a high extend, but some energy would be lost in the form of heat. Thus mechanical energy can be transformed into heat or internal energy completely, but the reverse may not happen since it violates the second law of thermodynamics.

Answer 12

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Whether it is possible to transform mechanical energy into heat or internal energy completely and whether the reverse may happen or not.

Concept explainers

Whether it is possible to transform mechanical energy into heat or internal energy completely and whether the reverse may happen or not.

Answer to Problem 1Q

Explanation of Solution

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