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October 1, 2014

Homework Help: physics

Posted by Mollie on Saturday, October 13, 2012 at 11:00pm.

A scraper is drawn over a tooth 22 times, each time moving a distance of 0.75 cm. The scraper is held against the tooth with a normal force of 5.4 N. Assuming a coefficient of kinetic friction of 0.90 between the scraper and the tooth, determine the work done to clean the tooth.

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