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How much energy is needed to increase the temperature of 500g of lead from 20 degrees celcius to 45. The specific heat heat capacityof lead is 128J/kg/degrees celcius

  • physics - ,

    just work with the units you have

    500g = .5 kg
    Your temp change is 25°C

    .5kg * 25°C * 128J/kg-°C = 1600J

    If you keep units in mind, you will be better able to determine how they combine.

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