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Q. A 60.5 kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to the floor above, a vertical height of 4.40 m. What is the work done on the man by each of the following forces?

Q. what advantage might there be in using two identical capacitors in parallel connected in series with another parallelpair, rather than using a single capacitor?

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