Question: A rod with charge 4.31 x 108 C is held 10.3 cm above a piece of sawdust with mass 3.12 x 105 kg. (a)

A rod with charge – 4.31 x 10–8 C is held 10.3 cm above a piece of sawdust with mass 3.12 x 10–5 kg.
(a) How much does the sawdust weigh?
(b) How much electrostatic force must the rod apply to lift the sawdust?
(c) If the charged rod lifts the sawdust, what is the electric charge of the sawdust?
(d) What happens to the strength of the electric field as the sawdust comes closer to the rod?

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a F mg 312 x 10 5 kg 980 m s 2 306 x 10 4 N b F Fw 306 ... View full answer

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