tlr1020 tlr1020

17-10-2017
Chemistry

contestada

A pulley system operates with 40% efficiency. if the work put in is 200 joules, how much useful work is produced?

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miracleminecraf miracleminecraf

17-10-2017

80 because 200 / 10 = 20, 20 x 40 is 80 out of 200

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