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a) An oil droplet with a mass of 7.20 x 10-16 kg is moving upward at...

a) An oil droplet with a mass of 7.20 x 10-16 kg is moving upward at a constant speed of 2.0 m/s between two horizontal charged plates. If the electric field strength between the plates is 2.20 x 104 V/m what is the charge on the oil droplet? Express your answer in the format of a.bc x 10-de C

b) In a Millikan-type experiment, two horizontal charged plates are 2.5 cm apart. A latex sphere of 1.3 x 10-15 kg remains stationary between the plates when the potential difference between the plates is 400 V, with the upper plate charged positive. What is the charge on the sphere ?   Express your answer in the format of a.bc x 10-de C

c) Two large, horizontal charged plates are separated by 0.050 m. A small plastic sphere is suspended between them and is experiencing a force of 4.5 x 10-15 N. What is the potential difference between the plates? Express your answer in the format of a.bcx 10c m/s

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