Packing material made of pieces of foamed polystyrene can easily become charged and stick to each...

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Answer 1

Answer #1

Weight of each sphere , W = density*volume*g

= 35*((4/3)*pi*0.01^3)*9.8

= 0.00144 N

So, electric force between them, Fe = 0.00144 N

Now, Fe = k*Q^2/d^2

where: d = 2 cm = 0.02 m

k = 9*10^9

So, 9*10^9*Q^2/0.02^2 = 0.00144

So, Q = 8*10^-9 C <--------answer

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Answer 2

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Packing material made of pieces of foamed polystyrene can easily become charged and stick to each...

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