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Q. Four charges are placed at the vertices of a square, centered at the origin. If each side of the square has a length of 0.224 m, what is the strength and direction of the net electric field at the origin? Express your answer in terms of the charge magnitude q.

Q. A 13 g bullet traveling 213 m/s penetrates a 2.0 kg block of wood and emerges going 152 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?

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Category:- Physics
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