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An energy of 84000\ J is required to raise the temperature of 2\ kg of water from 60\ °C to 70\ °C. Calculate the specific heat capacity of water.
 
From the given data,
 
Temperature of water before energy supply (T1= 60°\ C
 
Temperature of water ball after energy supply (T2= 70°\ C
 
Energy Supplied (Q= 84000\ J
 
Mass (m) = 2\ Kg
 
We know that,
 
Heat transfer (Q) is,
 
 
Formula to calculate Specific heat capacity is,
 
 
Substitute the values,
 
Specific heat capacity of water =