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0/1 points Previous Answers My Notes You hold a ruler that has a charge on its tip 2 cm above a small piece of tissue paper t
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Answer #1

When electrostatic force will be equal to weight of the tissue, it will be picked up,

so kq1q2/r^2 = mg

9e9*16e-6*q2/0.02^2 = 0.003*9.8

q2 = 0.003*9.8*0.02^2/[9e9*16e-6]

= 8.1667*10^-11 C

= 8.16667*10^-5 uC answer

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