Physics > 2000 > 23
WASSCE
A piece of metal of mass 50g is cooled from 80∘c to 20∘c calculate the amount of heat lost.[specify heat capacity of the material of metal = 450Jkg-1k-1]
A.
4.50 × 103 J
B.
2.25 ×103 J
C.
1.80 × 103 J
D.
1.35 × 103 J
Answer: D
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