A piece of brass of mass 170kg has its temperature raised from 0oC to 30oC. Calculate its increase in volume, given the density of brass at 0oC as 8.5 x 103kgm3 and its cubic expansivity as 5.7 x 10-1k1
A. 3.4 x 10-5m3 B. 4.3 x 10-5m3 C. 3.4 x 10-5m3 D. 3.4 x 10-3m3 E. 3.4 x 10-2m3
Correct Answer: C
Explanation
V = \(\frac{m}{p}= \frac{170}{8.5 x 10^{-3}}\) = 0.02 = \(\Delta\)\(\frac{\delta V}{V \delta T}\) \(\delta V\) = \(\Delta\) x V x \(\delta\)T = 5.7 x 10-5 x 0,02 x 30 = 0 3.42 x 10-5
