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Q. A woman on a 10 speed bicycle travels at 9 m/s relative to ground as a she passes a little boy on a tricycle going in the opposite direction. If the boy is travelling at 1m/s relative to the ground, how fast does the boy appear to be moving relative to woman?

Q. A charge of -1.9 × 10-9 C is at the origin and a charge of 8.8 × 10-9 C is on the x-axis at x = 3 m. At what two locations on x-axis (xpositive, xnegative) is the potential zero?

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Category:- Physics
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