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.

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Water 15°C 1200 W Electric heating element