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WASSCE
An electric drill rated 400W is used to drill a hole in copper of mass 400g in 20s. Calculate the rise in temperature if all the heat produced is absorbed by the copper.
[Specific heat capacity of copper = 400Jkg-1k-1]
[Specific heat capacity of copper = 400Jkg-1k-1]
A.
100°C
B.
75°C
C.
50°C
D.
45°C
Answer: C
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