Solve the following question given below:
Question: You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force of 327 N for 7.7 s, during which time the refrigerator moves a distance of 2.9 m at constant velocity.
Question I: What is the total work (by all forces) done on the refrigerator?
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Question II: What is the work done by friction?
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Please explain the equations and steps are used to get the answer. Thank you!