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12 January, 16:56

A piece of copper is heated to 90°C and then lowered into a beaker of water at 20°C.

The copper transfers 3040 J of energy to the water before it is removed.

The temperature of the copper after it is removed is 50°C.

The specific heat capacity of copper is 380 J/kg °C.

Calculate the mass of the copper.

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Answers (1)
  1. 12 January, 17:20
    0
    20kg

    Explanation:

    heat lost by copper=heat gained by watter
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