JAMB - Physics (2013 - No. 13)
A wire of length 100.0m at 30o has linear expansive of 2x10-5K-1 Calculate the length of the wire at a temperature of - 10oC
100.08m
100.04m
99.96m
99.92m
Giải thích
\(L_2 = L_1 + \alpha(\theta_2 - \theta_1)\)
= 100 + 0.00002(-10-30) = 99.92
= 100 + 0.00002(-10-30) = 99.92