A 11.7 kg block is dragged over arough, horizontal surface by a 72.3 Nforce acting at 21° above thehorizontal. The block is displaced 4.1m, and the coefficient of kinetic friction is 0.235
(d) What is the increase in internal energy of theblock-surface system due to friction?
Eint = wrong check mark J
(e) Find the total change in the block's kinetic energy.
K = wrong check mark J


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