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Physics 5 Online
OpenStudy (anonymous):

A student rubs her hand together. The average force used to slide one hand along the other is 1.2 N. In each movement, one hand moves 0.080 m. The other hand remains stationary. Calculate the number of movements needed for 2.0 J of work to be done.

OpenStudy (anonymous):

in one movement : 1.2N x 0.08m=0.096j to acchieve 2.0j: 2.0j / 0.096j= 20(5/6)

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