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A hot-water heater is operated by solar power. If the solar collector has an area of 5.8 m2 and the power delivered by sunlight is 550 W/m2, how long will it take to increase the temperature of 1.0 m3 of water from 24°C to 59°C?

  • physics -

    Recived solar power x time = C*M*deltaT

    C = 4184 J/kg*C
    M = 1000 kg
    deltaT = 35 C

    received solar power = 5.8 m^2 * 550 W/m^2 = 3190 Watts

    Solve for time required.

    It looks like about a half a day.

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