
Concept explainers
(a)
Interpretation: The final temperature of the water in the beaker to be calculated.
Concept Introduction:
(a)

Answer to Problem SI6RE
The final temperature of the water in the beaker is
Explanation of Solution
Given
Temperature change
Absorbed heat (H) =1000cal
Specific heat of water is
The equation of heat is as follows:
Here H is heat, m is mass, C is specific heat and T is temperature.
Put the values in above equation is as follows:
Thus, the final temperature of the water in the beaker is
(b)
Interpretation: The final temperature of the coin to be calculated.
Concept Introduction: Thermodynamics is the analysis of heat transfer. Heat transfer direction is always from a hotter substance to colder one.
(b)

Answer to Problem SI6RE
The temperature of the coin is
Explanation of Solution
Water and coin are reached in thermal equilibrium when they are put together in a beaker. After exchanging same amount of heat with each other both have same temperature. Thus the temperature of the coin is
(c)
Interpretation: The specific heat of copper coin to be calculated.
Concept Introduction: Thermodynamics is the analysis of heat transfer. Heat transfer direction is always from a hotter substance to colder one.
(c)

Answer to Problem SI6RE
Specific heat of copper coin is
Explanation of Solution
Given mass of copper coin (m) = 30.4g
Temperature change
Absorbed heat (H) =1000cal
The equation of heat is as follows:
Here H is heat, m is mass, C is specific heat and T is temperature.
Put the values in above equation is as follows:
Thus the specific heat of copper coin is
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