Question
A flat copper sheet has a hole with area $0.250 \mathrm{~m}^{2}$ at room temperature $\left({ }^{\circ} \mathrm{C}\right) .$ If it's heated to $400^{\circ} \mathrm{C},$ what's the hole's new area?
Step 1
250 \, m^{2}$, the initial temperature $T_{i} = 22^{\circ}C$, the final temperature $T_{f} = 400^{\circ}C$, and the coefficient of linear expansion for copper $\alpha = 1.7 \times 10^{-5} \, ^{\circ}C^{-1}$. Show more…
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