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Q1. A small 150 g pebble is 3.4km deep in the ocean and is falling with a constant speed of 25 m/s. What force does the water exert on the falling pebble?

Q2. At a distance rl from point charge the magnitude of the electric field created by charge is 248 N/C. After a distance r2 from the charge, field has a magnitude of 132N/C. Find ration r2/r1.

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