Physics, 17.05.2021 22:30 McMingMing

a compound strip of brass and iron 10cm long at 20c is held horizontally with the iron uppermost. when heated from below with a bunsen burner. the temperature of the brass is 820c and that of the iron is 770c. calculate the difference in length of the iron and the brass( coefficient of linear expansion of brass and iron are 0.000019c and 0.000012c respectively

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