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Q. When verticaly falling sand hits a horizontally moving cart, the cart slows.Ignore any friction between the cart and the tracks. Give two reason for this, one in terms of a horizontal force acting on the cart, and one terms of momentum conservation.

Q. A coiled telephone cord forms a spiral with 55 turns, a diameter of 1.30 cm, and an unstretched length of 60.0 cm. Determine the self-inductance of one conductor in the unstretched cord.

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Category:- Physics
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