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]

100^oC

75^oC

50^oC

45^oC

Correct Option

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2 months ago

some people might be wondering how they got 0.4 I think they converted from g to kg. by dividing by 1000

3 years ago

please i haven't gotten my activation code and I had already made payment.?

3 years ago

Wrong solving

ceoofwahala

20th June, 2026

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infinitehoaxx

21st May, 2026

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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]