How large a force is necessary to stretch a 2.0-mm diameter copper wire (Y = 11 × 1010 N/m2) by 1.0%?
A. 2.1 kN
B. 3.5 kN
C. 6.9 kN
D. 11 kN
E. 5.4 kN
Answer: B
Physics & Space Science
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