Heating time in a kettle

An electric kettle with a power of $2000\mathrm{W}$ heats $1.5\mathrm{kg}$ of water from $15{}^{\circ }\mathrm{C}$ to $100{}^{\circ }\mathrm{C}$. Assuming that all the electrical energy is absorbed by the water, compute the heat required and the time taken ($c_a=4186J/(\mathrm{kg}\cdot \mathrm{K})$).