an electric heater of 50W is used to heat a metal block of mass 5kg.In 10 minutes,a temperature rises of 12C is produced (a)how much heat is produced by the heater in 10 minutes?(b)calculate the specific heat capacity of the metal
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Answer:
Heat supplied by the heater in 10 mins
= power x time
= 50 x (10 x 60)
= 30000 J
This heat is equal = MCΔt
= 5 x c x 12
= 60cJ
= 60C = 30,000
C = 30,000/60
C = 500 J kg-1K-1
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