Question

If the temperature of 10 kg of water is raised by $10{}^{o}C$, then the heat energy supplied to water is _________ . (specific heat capacity of water is $4200Jk{g}^{-1}{K}^{-1}$)

Answer 1

For raising $1^{0}C$ of 1 kg water = 4200J/kg K

For raising ${10}^{0}C$ of 10kg water = 4200 $\times 10\times 1000$

= 4.2$\times$ ${10}^{7}J$