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Questions & Answers

"A kettle boils 0.6kg of water. After some time the temperature of the water has decreased to 83 degrees. The specific heat capacity of water is 4200J/kg. Calculate the energy transferred to the surroundings."

A: Here we will use the specific heat capacity - i.e. the amount of heat energy needed to raise or lower the temperature of a substance of mass 1 kg by 1 deg C or 1 K. To find the heat energy transferred to the surroundings, we have to rearrange the equation a bit:

Now, it is just a matter of inserting the right numbers - and we get our answer!

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