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Block A in the figure weighs w1 and block B weighs w1. The coefficient of kinetic friction between all surfaces is uk.
1. Find the magnitude of the horizontal force necessary to drag block B to the left at constant speed if A rests on B and moves with it (figure (a)).
2. Find the magnitude of the horizontal force necessary to drag block B to the left at constant speed if A is held at rest (figure (b)).
light of wavelength 615 nm in vacuum is incident perpendicularly on a soap film n 1.31 suspended in air. what are the
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An 82 kg lumberjack stands at one end of a 355 kg floating log. Both the log and the lumberjack are at rest initially. If the lumberjack now trots toward the other end of the log with a speed of 2.70 m/s relative to the log, what is the lumberjack's ..
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