Question

A metal block of mass 1 kg at constant atmospheric pressure and at initial temperature 20°C is given a
heat of 20000J. The change in internal energy of the block is (specific heat, coefficient of cubical
expansion and density of metal are 400 J Kg/°C, 9 x 10-6 °Сand 9 g/cmº respectively)
(A) zero
(B) 0.05J
(C) 20000
(D) 19999.950
A
В
C
D​

Answer 1

Answer:

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