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An electrical resistor is installed in a container ... ...

An electrical resistor is installed in a container of water to heat it. The resistor dissipates heat at a rate of 2.0 W, and the container holds 10 kg of water. How long would it take to raise the temperature of the water 5° C? (Note: The specific heat of water is 4.2 x 10³ J/kg °C, and 1 W is 1 J/s.)