An aluminum sphere is 9.00 cm in diameter
What will be its % change in volume if it is heated from 30∘C to 180 ∘C?
Given,
d = 9 cm ; T1 = 30 deg C = 303 k ; T2 = 180 deg C = 453 K
D = Do ( 1 + T)
D = 9 [ 1 + x 22.2 x 10-6 x (453 - 303) ] = 9.03 cm
R = 9.03 cm/2 = 4.52 cm
V = 4/3 pi r3 = 4/3 x 3.14 x 4.523 = 386.82 cm3
Vo = 4/3 pi ro3 = 4/3 x 3.14 x 4.53 = 381.7 cm3
% change in volume
%V = ( 386.82 - 381.7) / 381.7 = 1.34
Percentage change of 1.34 %.
An aluminum sphere is 9.00 cm in diameter What will be its % change in volume...
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