Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chaqpter 16 - Temperature and Heat - Problems and Conceptual Exercises - Page 567: 38

Answer

$T=23.9^{\circ}C$

Work Step by Step

We can find the equilibrium temperature of the system as $T=\frac{m_{pb}c_{pb}T_{pb}+m_wc_wT_w}{m_{pb}c_{pb}+m_wc_w}$ We plug in the known values to obtain: $T=\frac{0.235(128)(84.2)+0.177(4186)(21.5)}{0.235(128)+0.177(4186)}$ $T=23.9^{\circ}C$
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