Physics
5th Edition
ISBN: 9781260486919
Author: GIAMBATTISTA
Publisher: MCG
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Chapter 1, Problem 9P
To determine
The thickness which result in the transfer of
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An object has mass m, surface area A, temperature T, N molecules, and specific heat capacity c. The total thermal energy stored in the object is:
Group of answer choices
proportional to T^4
proportional to AT
proportional to m
proportional to cT
proportional to NT
Heat flows through a pipe wall, with a radius in Ri
and outer radius Ro. The length of the pipe is L. The thermal conductivity of the pipe
material is proportional to the temperature squared in the form:
k=aT²+b
a. Derive the equation for the pipe wall temperature profile,
b. Calculate the heat loss through the pipe wall.
Samples A and B are at different initial temperatures when they are placed in a thermally insulated container and allowed to come to
thermal equilibrium. Figure (a) gives their temperatures T versus time t. Sample A has a mass of 5.37 kg; sample B has a mass of 1.64
kg. Figure (b) is a general plot for the material of sample B. It shows the temperature change AT that the material undergoes when
energy is transferred to it as heat Q. The change AT is plotted versus the energy Q per unit mass of the material, and the scale of the
vertical axis is set by AT, = 4.10 °C.
What is the specific heat of sample A?
100
AT
A
60
20
10
20
8.
16
t (min)
Q/m (kJ/kg)
(a)
(b)
Number
i
Units
T (°C)
AT (C°)
Chapter 1 Solutions
Physics
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