Question

A cube of silver with mass 0.65kg at room temperature 21°C. When the cube is heated its temperature become 36° . If the specific heat of silver 25( 1J/Kg. K ) . How much thermal energy (Q) is added to the silver ?

Answer 1

Given:-

mass of cube, m=0.65 kg

Initial temperature, $T_{i}=21^{0} C$

Final temperature, $T_{f}=36^{0}C$

specific heat of silver, C=25 kJ/kg-K

To Find:-

Heat added to the silver

Explanation:-

The expression of specific heat is given by the formula:-

$Q=mC\left(T_{f}-T_{i}\right)\\\\\Rightarrow Q=0.65\times25\times(36-21)=243.75kJ\\\\\text{Therefore, 243.75kJ of heat is added to the silver.}$