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A target is located at a point P at a height of 10 m above the ground. A particle is to be projected from a point O on the ground to hit the target, where OP = 180 m. Let umin be the minimum possible velocity of projection.
(a) 56 m/s
(b) 49 m/s
(c) 42 m/s
(d) 35 m/s
An electron close to a large, flat sheet of charge is repelled from the sheet with a 2.2pN force. Find the surface charge density on the sheet
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Compute the gravitational potential due to a thin rod of length L and mass M at a distance R from the center of the rod and in a direction perpendicular to the rod. Secondly, consider a point mass located at a distance D from the nearest end of a thi..
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