EBK PHYSICS FOR SCIENTISTS AND ENGINEER
9th Edition
ISBN: 9781305804463
Author: Jewett
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Question
Chapter 1, Problem 1.50P
(a)
To determine
The factor by which
(b)
To determine
The pattern of proportionality of
(c)
To determine
The quantities that should be plotted on the horizontal and vertical axis to display the above proportionality as a straight line on a graph,
(d)
To determine
The slope of the above graph.
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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 4.96 kg; sample B has a mass of 1.35
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, = 4.80 °C.
What is the specific heat of sample A?
100
AT,
60
20
10
20
8.
16
t (min)
Q/m (kJ/kg)
(a)
(b)
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°)
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 4.79 kg; sample B has a mass of 1.50 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, = 4.50 °C.
What is the specific heat of sample A?
Number
i
T (°C)
100
60
20
0
A
Units
10
t (min)
(a)
20
AT (Cº)
AT,
0
8
Q/m (kJ/kg)
(b)
16
Chapter 1 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
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