A heat engine takes in 340 J of energy from a hot reservoir and performs 22.0 J of work in each cycle. (a) Find the efficiency of the engine. % (b) Find the energy expelled to the cold reservoir in each cycle. J

A heat engine takes in 340 J of energy from a hot reservoir and performs 22.0 J of work in each cycle. (a) Find the efficiency of the engine. % (b) Find the energy expelled to the cold reservoir in each cycle. J

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter18: Heat Engines, Entropy, And The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 1P

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Question

Please and thank you for your help!

A heat engine takes in 340 J of energy from a hot reservoir and performs 22.0 J of work in each cycle.
(a) Find the efficiency of the engine.
%
(b) Find the energy expelled to the cold reservoir in each cycle.

Expert Solution

Step 1

(a)

Find the efficiency of the engine.

$\begin{array}{rcl} e & = & \frac{W}{Q} \times 100 \\ = & \frac{22.0 J}{340 J} \times 100 \\ = & 0.065 \times 100 \\ = & 6.5 % \end{array}$

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