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Physics, 11.09.2019 05:30 mat1413

In a pollution control experiment, minute solid particles (typical mass 1 × 10−13 slug) are dropped in air. the terminal speed of the particles is measured to be 0: 2 ft=s. the drag of these particles is given by fd =kv, where v is the instantaneous particle speed. find the value of the constant k. find the time required to reach 99 percent of terminal speed.

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