1. An eletrostatic paint sprayer consists of a charged metal sphere. Charged paint droplets (the sign the same as the metal sphere) are shot towards the metal sphere using a paint gun. The paint droplets repel and move towards a grounded object that needs to be painted. In the figure below, an electrostatic paint sprayer has a 0.2 m diameter metal sphere at a potential V of 20 kV that repels paint droplets onto a grounded wall. sphere Vwall=0 (a) What charge is on the sphere? Qsphere 0 C = paint drop repelled to the wall Vsphere Electrostatic Paint Sprayer
1. An eletrostatic paint sprayer consists of a charged metal sphere. Charged paint droplets (the sign the same as the metal sphere) are shot towards the metal sphere using a paint gun. The paint droplets repel and move towards a grounded object that needs to be painted. In the figure below, an electrostatic paint sprayer has a 0.2 m diameter metal sphere at a potential V of 20 kV that repels paint droplets onto a grounded wall. sphere Vwall=0 (a) What charge is on the sphere? Qsphere 0 C = paint drop repelled to the wall Vsphere Electrostatic Paint Sprayer
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Transcribed Image Text:1. An eletrostatic paint sprayer consists of a charged metal sphere. Charged paint droplets (the sign the
same as the metal sphere) are shot towards the metal sphere using a paint gun. The paint
droplets repel and move towards a grounded object that needs to be painted.
In the figure below, an electrostatic paint sprayer has a 0.2 m diameter metal sphere at a potential
V sphere of 20 kV that repels paint droplets onto a grounded wall.
Vwall = 0
(a) What charge is on the sphere?
Qsphere
C
= 0
9 drop
X
paint drop
repelled to the wall
Vsphere
5.4-10-11 C
(b) What charge must a 0.06 mg drop of paint have to arrive at the object with a speed of 6
m
S
Electrostatic Paint Sprayer
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