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The graph below shows the force needed to stretch a spring. What work is needed to stretch it from 5 centimeters to 35 centimeters?

The graph below shows the force needed to stretch a spring. What work is needed to stretch it from 5 centimeters to 35 centimeters? Include units in your answer.
Force (N)
Force vs. Elongation
8.00
7
4.00
0.00
0.00
0.20
Elongation (m)
0.40

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