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Q. A particle starts from the origin at = 0 with an initial velocity of 5.5 along the positive axis.If the acceleration is (-2.8 + 4.5 ), determine (a)the velocity and (b)position of the particle at the moment it reaches its maximum coordinate.

Q. If 4x10-3 kg of gold is deposited on the negative electrode of an electrolytic cell in a period of 2.64 h, what is the current through the cell in this period? Assume that the gold ions carry one elementary unit of positive charge. (The atomic weight of gold is 197.)

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