Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 19 - Exercises and Problems - Page 350: 37



Work Step by Step

We first find the number of gallons using the fact that the cost is 1.75 dollars per gallon. Thus, we find: $g=\frac{4.95}{1.75} = 2.829 \ gallons$ We find the number of $kWh$ this is: $ 2.829 \times 30 = 84.86 \ kWh$ Thus, it follows: $COP = \frac{84.86}{30}=2.829$
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