Concept explainers
The amount of thermal energy to be added to a substance for a given change in temperature.
Answer to Problem 22PP
The amount of thermal energy to be added is
Explanation of Solution
Given:
The temperature of 100 kg iron is changed from
Formula Used:
When temperature of an object is changed from
Calculation:
Here, the given object is iron which has a mass of
The initial temperature of iron in Kelvin can be calculated as,
Similarly, the final temperature of iron in Kelvin is,
Substituting these parameters in (1), the thermal energy to be added to achieve this temperature change is,
Conclusion:
Thus, the thermal energy required to raise the temperature of iron for the given range is
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