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A machine is used to convert heat energy into work energy, and is connected to a cooling system which keeps the machine at a constant temperature. If 2000 kJ of heat energy enter the machine, and the machine performs 700 kJ of work,

how much heat energy must still be removed by the cooling system?

Remember What the law of Conservation of energy says about the total energy before and after a transformation.

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The amount of heat energy that must still be removed by the cooling system is 1300 kJ.

Conservation energy

The total energy before and after a transformation must be equal.

Based on this principle, the heat energy that must still be removed by the cooling system is calculated as follows;

Input heat energy = out put heat energy

E = h + w

2000 kJ = h + 700 kJ

1300 kJ = h

Thus, the amount of heat energy that must still be removed by the cooling system is 1300 kJ.

Learn more about heat energy here: https://brainly.com/question/7541718

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