The coefficient of linear expansion for aluminum is $1.8 \times 10 ^ { - 6 } \mathrm {~K} - 1$
What is its coefficient of volume expansion?
A) $5.4 \times 10 ^ { - 6 } \mathrm {~K} ^ { - 1 }$
B) $9.0 \times 10 ^ { - 6 } \mathrm {~K} ^ { - 1 }$
C) $3.6 \times 10 ^ { - 6 } K - 1$
D) $5.8 \times 10 ^ { - 18 } K - 1$
E)$0.60 \times 10 ^ { - 6 } \mathrm {~K} ^ { - 1 }$

Question

Quizplus · Accepted Answer

The coefficient of volume expansion is approximately three times the coefficient of linear expansion for isotropic materials, so for aluminum, it is $3 \times 1.8 \times 10^{-6} \mathrm{~K}^{-1} = 5.4 \times 10^{-6} \mathrm{~K}^{-1}$.

The Coefficient of Linear Expansion for Aluminum Is 1.8×10−6 K−11.8 \times 10 ^ { - 6 } \mathrm {~K} - 11.8×10−6 K−1

The Coefficient of Linear Expansion for Aluminum Is $1.8 \times 10 ^ { - 6 } \mathrm {~K} - 1$