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An observer S sees a big flash of light 1600 m from his position and a small flash of light 570 m closer to him directly in line with the big flash. He determines that the time interval between the flashes is 3.69×10-6 s and the big flash occurs first. What is β, the relative velocity divided by...

a plastic rod of length L = 2.000 m and uniform positive charge Q = 3.00×10-4 C lying on an x axis. With V = 0 at infinity, find the electric potential at point P1 on the axis, at distance d= 0.560 m from one end of the rod.

a small nonconducting ball of mass m = 5.8 g and charge q = 5.00×10-8 C (distributed uniformly through its volume) hangs from an insulating thread that makes an angle θ = 20° with a vertical, uniformly charged nonconducting sheet (shown in cross section). Considering the weight of the ball and...