A low-power source of energy could put out a lot of work provided it
A) exerted its power over a very large distance.
B) operated for a short time.
C) operated for a long time.
D) exerted a sufficiently strong force.
E) Nonsense-- there is no way that a low-power source can put out a large amount of work.
Question 2
It takes 87 J of work to stretch an ideal spring from 1.4 m to 2.9 m from equilibrium. What is the value of the spring constant (force constant) of this spring?
A) 52 N/m B) 77 N/m C) 39 N/m D) 27 N/m
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