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Q1. The electric motor of a model train accelerates the train from rest to 0.580 m/s in 33.0 ms. the total mass of the train is 563 g. Find out the average power delivered to the train during its acceleration. The units need to W for the final answer.

Q2. What is the magnitude of the total electrostatic energy of the ?nal 5 charge system? It may be useful to consider symmetry property of the charge distribution that leads to cancellations among several terms.

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