Determine the speed of the stone

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Q. An oil drop carries one excess electron and weighs 9.3 x10-15 N. What electric field strength is required to suspend the drop so it is motionless?

Q. A 0.25 kg stone attached to a 0.8 m long string is rotated in a horizontal plane. The string makes an angle of 24° with the horizontal. Determine the speed of the stone.

Reference no: EM1357353

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