Concept explainers
(a)
Five thermal energy transfers that occur.
(a)
Explanation of Solution
Aluminum container at
Ice at
Conclusion: All the five thermal energy transfer that occurs is identified.
(b)
Construct a table similar to table 11.5
(b)
Explanation of Solution
A comprehensive table is constructed for all the five thermal energy transfers.
|
|
|
|
|
| Expressions |
| 1.00 | 2090 | - | 0 |
|
|
| 1.00 | - |
| 0 | 0 |
|
| 1.00 | 4186 | - | T | 0 |
|
| 0.500 | 900 | - | T | 20.0 |
|
| 6.00 | 2430 | - | T | 30.0 |
|
Conclusion:
The comprehensive table similar to table 11.5 is constructed.
(c)
Conservation of energy equation.
(c)
Explanation of Solution
According to the conservation of energy, heat lost by one in a mixture is equal to heat gained by the other.
Summing up all the energy expressions and equating it to zero.
Conclusion:
The equation denoting the conservation of energy after summing up all the expression and setting it to zero is constructed.
(d)
The final equilibrium temperature.
(d)
Answer to Problem 34P
Explanation of Solution
Given Info: Mass of aluminum container is 0.500 kg, initial temperature of the aluminum container is
Formula to calculate the heat gained by cold water is,
Rearrange in terms of
Substitute all quantities in the second through sixth columns into the last column and sum to find T.
Conclusion:
Therefore, the final equilibrium temperature is
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Chapter 11 Solutions
College Physics
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