阿摩線上測驗
3. A certain spring that obeys Hooke’s law is stretched by an external agent. The work done in
stretching the spring by 10 cm is 4 J. How much additional work is required to stretch the spring
an additional 10 cm?
(A) 2 J
(B) 4 J
(C) 8 J
(D) 10 J
(E) 12 J
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統計： A(0), B(1), C(0), D(1), E(11) #3233269
統計： A(0), B(1), C(0), D(1), E(11) #3233269
