Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 18, Problem 29P
To determine
The heat absorbed.
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The world's most active volcanoes, such as the Kilauea volcano in Hawaii, can disgorge about 5 ✕ 105 m3 of 1025°C lava per day. What is the rate of heat transfer out of the earth by convection if this lava has a density of 2523 kg/m3 and eventually cools to 32°C? Assume that the specific heat of lava is the same as that of granite (840 J/(kg · °C)).
How much thermal energy (in J) is required to boil 1.90 kg of water at 100.0°C into steam at 157.0°C? The latent heat of vaporization of water is 2.26 x 10° J/kg and the specific heat of steam is 2010
kg · °C
HINT
At temperatures of a few hundred kelvins the specificheat capacity of copper approximately follows theempirical formula c = α + βT + δT −2, whereα = 349 J/kg · K, β = 0.107 J/kg · K2, andδ = 4.58 × 105J · kg · K. How much heat is needed toraise the temperature of a 2.00-kg piece of copper from20 °C to 250 °C ?
Chapter 18 Solutions
Physics for Scientists and Engineers
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Heat Transfer: Crash Course Engineering #14; Author: CrashCourse;https://www.youtube.com/watch?v=YK7G6l_K6sA;License: Standard YouTube License, CC-BY