Engineering Board Exam Reviewer · Engineering Materials · medium
An aluminum bar 2 m long is heated by 80 °C. How much does it expand? ( = 23.6 × 10-6 /° C)
- 1.89 mm
- 11.33 mm
- 1.888 mm
- 3.78 mm
Answer
D. 3.78 mm
Solution
L = L0 T = 23.6 × 10-6 (2000 mm)(80) = 3.78 mm.
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