34 O Samples A and B are at different initial temperatures when they are placed in a thermally insulated container and al- lowed to come to thermal equilibrium. Figure 18-34a gives their temperatures T versus time t. Sample A has a mass of 5.0 kg; sam- ple B has a mass of 1.5 kg. Figure 18-34b 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, = 4.0 C. What is the specific heat of sample A? 100 AT, 60 в 20 10 20 8. 16 t (min) Q/m (kJ/kg) (a) (6) ()) LV (0.)L

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34 O Samples A and B are at different initial temperatures
when they are placed in a thermally insulated container and al-
lowed to come to thermal equilibrium. Figure 18-34a gives their
temperatures T versus time t. Sample A has a mass of 5.0 kg; sam-
ple B has a mass of 1.5 kg. Figure 18-34b 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, = 4.0 C.
What is the specific heat of sample A?
100
AT,
60
в
20
10
20
8.
16
t (min)
Q/m (kJ/kg)
(a)
(6)
()) LV
(0.)L
Transcribed Image Text:34 O Samples A and B are at different initial temperatures when they are placed in a thermally insulated container and al- lowed to come to thermal equilibrium. Figure 18-34a gives their temperatures T versus time t. Sample A has a mass of 5.0 kg; sam- ple B has a mass of 1.5 kg. Figure 18-34b 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, = 4.0 C. What is the specific heat of sample A? 100 AT, 60 в 20 10 20 8. 16 t (min) Q/m (kJ/kg) (a) (6) ()) LV (0.)L
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