Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 23 - Think and Solve: 49

Answer

59,400 J.

Work Step by Step

Solve for the power of the iron. $$Electric \; power = (current) \times (voltage)$$ $$P = (9 A)(110 V)$$ Solve for P = 990 W. Find the heat energy generated in 1 minute. $$E = power \times time = (990 \frac{J}{s})(60 s) = 59,400 J$$
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