Essential University Physics: Volume 1 (3rd Edition)

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

Chapter 17 - Exercises and Problems: 74

Answer

Please see the work below.

Work Step by Step

(a) As we know that $Q=mL_f$ We plug in the known values to obtain: $Q=2.5\times 10^{-13}\times 334$ $Q=8.35\times 10^{-11}KJ$ (b) As $P=\frac{Q}{t}$ We plug in the known values to obtain: $P=\frac{8.35\times 10^{-11}}{1yr\times \frac{365days}{yr}\times \frac{24hrs}{day}\times \frac{3600s}{hr}}$ Now we can find Greenland's energy imbalance in $\frac{W}{m^2}$ as $\frac{P}{A}=\frac{2.64\times 10^{-18}}{1.71\times 10^{12}}=1.54\times 10^{-18}\frac{W}{m^2}$
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