Track 2 Form 3 Physics Worksheet - Annual Examinations For Secondary Schools, 2014 Page 11
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12iv) Name TWO processes by which heat is lost from each block.
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b) Stefan is asked to find the specific heat capacity of water. He is given the following
apparatus:
To 12 V
power
supply
i) Label the parts of the apparatus in the space shown above.
[3]
ii) With this set up, heat energy is lost to the surroundings. What can Stefan do to reduce
heat losses?
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iii) Stefan uses 0.2 kg of pure water for this experiment. Given that 54 600 J of heat energy
are used to raise the temperature from 20°C to 85°C, calculate the specific heat capacity
of water.
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Physics – Secondary Schools – Track 2 – Form 3 – 2014
Page 11 of 12
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