Inquiry into Physics

8th Edition
ISBN: 9781337515863
Textbook Problem

(¦ Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.)

. ¦ In winter, the amount of internal energy a heat pump deliver to a house is greater than the electrical energy it uses. Does this violate the law of conservation of energy? Explain.

To determine

Whether a heat pump operating during winters violates the law of conservation of energy or not.


Given information:

During winters, a heat pump delivers internal energy greater than the input electrical energy it uses.

The construction of a heat pump is as shown in figure, comprising condenser, evaporator, expansion valve and compressor. The equation that explains the working principle of this pump is as:



Qc is the heat transfer between the working fluid and the outside air.

Qh is the heat transfer from the pump to the room.

W is the work done by the compressor using electrical energy

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

Many sports drinks offer monosaccharides. a. that may help maintain hydration and contribute to blood glucose. ...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

Calculate your protein RDA.

Understanding Nutrition (MindTap Course List)

25-30 What is the primary structure of DNA?

Introduction to General, Organic and Biochemistry

In the following diagram, designate each daughter cell as diploid (2n) or haploid (n).

Human Heredity: Principles and Issues (MindTap Course List)