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 0.15 m diameter metal sphere at a potential V of 22 kV that repels paint droplets onto a grounded wall. Note that the charge on the paint sprayer is not the same as the charge on the paint droplets. sphere (a) What charge is on the sphere? Q sphere a drop = = 1.837 107 -11, с 6.545 107 paint drop repelled to the wall Vsphere m (b) What charge must a 0.09 mg drop of paint have to arrive at the object with a speed of 8 S C Vwall=0 V 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 0.15 m diameter metal sphere at a potential V of 22 kV that repels paint droplets onto a grounded wall. Note that the charge on the paint sprayer is not the same as the charge on the paint droplets. sphere (a) What charge is on the sphere? Q sphere a drop = = 1.837 107 -11, с 6.545 107 paint drop repelled to the wall Vsphere m (b) What charge must a 0.09 mg drop of paint have to arrive at the object with a speed of 8 S C Vwall=0 V Electrostatic Paint Sprayer ?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

Question

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 0.15 m diameter metal sphere at a potential
V. of 22 kV that repels paint droplets onto a grounded wall. Note that the charge on the paint
sprayer is not the same as the charge on the paint droplets.
sphere
(a) What charge is on the sphere?
-7
Q sphere 1.837 10 7 C
=
a drop
paint drop
repelled to the wall
Vsphere
6.545.10-11 √ C
Vwall=0
m
(b) What charge must a 0.09 mg drop of paint have to arrive at the object with a speed of 8
S
Electrostatic Paint Sprayer

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