The temperature of a plastic cube is monitored while the cube is pushed 8.6 m across a floor at constant speed by a horizontal force of 19 N. The monitoring reveals that the thermal energy of the cube increases by 120 J. What is the increase in the thermal energy of the floor along which the cube slides

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Question:

The temperature of a plastic cube is monitored while the cube is pushed 8.6 m across a floor at constant speed by a horizontal force of 19 N. The monitoring reveals that the thermal energy of the cube increases by 120 J. What is the increase in the thermal energy of the floor along which the cube slides

Answers

Answer:Answer:43.4JExplanation:We know thatWork done = total heat energy But work done is force x distance=> F = 19 x8.6 = 163.4 JSo the total heat. Will be Heat of cube + heat of floor = 163.4JSo that heat of floor will now befloor = 163.4 J - 120 J = 43.4 JoulesExplanation:

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