WAEC - Physics (1998 - No. 17)
If the cubic expansivity of brass between 27oC and 100oC is 5.7 x 10-5K-1, What is its linear expansivity?
2.85 x 10-5K-1
1.90 x 10-5K-1
1.86 x 10-5K-1
1.70 x 10-5K-1
1.63 x 10-5K-1
Uitleg
\(\alpha\) = \(\frac{\Delta}{3} = \frac{5.7 \times 10^{-5}}{3}\)
= 1.90 x 10-5K-1
= 1.90 x 10-5K-1