On which factors does the heat capacity depend?

What is specific heat? Give its unit and on which factors does specific heat depend?

Define specific heat capacity and write its $SI$ unit.

Write the value of the specific heat capacity of water with its unit.

The heat energy released by water of mass $2 \,kg$ when it is cooled by $10^{\circ} C$ is (Specific heat capacity of water $= 4200 \,J \,kg^{-1} \,K^{-1}$) (in $\,J$)

$A$ $10\, kW$ drilling machine is used to drill a bore in a small aluminium block of mass $8.0\, kg$. How much is the rise in temperature of the block in $2.5$ minutes,assuming $50\, \%$ of power is used up in heating the machine itself or lost to the surroundings? (Specific heat of aluminium $= 0.91\, J\, g^{-1}\, K^{-1}$)