How several electrons must be transferred from the plate

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Q. A wooden raft has a mass of 45 kg. When empty it floats in water (density 1000 kg/m3) with 68% of its volume submerged. What mass of sand can be put on the raft without it sinking?

Q. A plate carries a charge of -3.0uC, while a rod carries a charge of +2.0uC. How many electrons must be transferred from the plate to the rod, so that both objects have the same charge.

Reference no: EM1345930

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