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15oC. How lon

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

Chapter16: Temperature And The Kinetic Theory Of Gases

Section: Chapter Questions

Problem 4OQ: When a certain gas under a pressure of 5.00 106 Pa at 25.0C is allowed to expand to 3.00 times its...

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Question

A large sheet of glass 50 cm thick is initially at 150°C throughout. It is plunged into a stream of running water having a temperature of 15oC. How long will it take to cool the glass to an average temperature of 38oC? For glass: k= 0.70 W/mK; ρ= 2480 kg/m3, Cp = 0.84 kJ/kgK

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A 1.00-kg block of copper at 20.0C is dropped into a large vessel of liquid nitrogen at 77.3 K. How many kilograms of nitrogen boil away by the time the copper reaches 77.3 K? (The specific heat of copper is 0.092 4 cal/g C, and the latent heat of vaporization of nitrogen is 48.0 cal/g.)
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