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pooja needs 15 kg of water at 38 degree Celsius to take a bath, but her water is only at 20 degree Celsius. calculate the minimum amount of heat energy she requires to heat the water to the required temperature.​

Respuesta :

Answer:

Q = 1128.6 [kW] - kilowatts

Explanation:

To calculate the amount of energy required, the following expression should be used:

[tex]Q=m*c_{p}*(T_{f} - T_{i}) \\where:\\C_{p}=specific water heat = 4.18 [\frac{kJ}{kg*K}] \\m = mass = 15 [kg]\\T_{f}= Final temperature = 38 [C]\\T_{i}=20[C][/tex]

Q = 15*4.18*(38-20)

Q = 1128.6 [kW]