1.2 kg of liquid water initially at 15 C is to be heated to 95 C in a teapot equipped with a 1200-W electric heating element inside. The teapot is 0.5 kg and has an average specific heat of 0.7 kJ/kg K. Taking the specific heat of water to be 4.18 kJ/ kg K and disregarding any heat loss from the teapot, determine how long it will take for the water to be heated