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Problem 10 A 10 kw drilling machine is used to drill a bore in a...

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Problem 10 A 10 kw drilling machine is used to drill a bore in a small aluminium block of mass 8 0 kg How much is the rise of temperature of the block in 2 5 minuts assuming 50 of the power is used in heating the machines itself or lost to the surroundings Specific heat of aluminium 876 J kg K Ans 107 02

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