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An electrostatic paint sprayer has a 0.200-m-diameter metal sphere at a potential of 25.0 kV that repels paint droplets onto a grounded object. (a) What charge is on the sphere? (b) What charge must a 0.100-mg drop of paint have to arrive at the object with a speed of 10.0 m/s?

(a) $Q=2.78 \times 10^{-7} \mathrm{C}$(b) $q=2.00 \times 10^{-7} \mathrm{C}$

Physics 102 Electricity and Magnetism

Chapter 19

Electric Potential and Electric Field

Electric Charge and Electric Field

Gauss's Law

Electric Potential

Cornell University

Rutgers, The State University of New Jersey

Simon Fraser University

McMaster University

Lectures

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In physics, a charge is a …

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$\bullet$ A charged paint …

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22.9. A charged paint is s…

03:41

A solid metal sphere with …

03:24

12:02

A point charge $q_1 = +$5.…

04:46

22.16. A solid metal spher…

04:54

A charged paint is spread …

01:44

(a) How much excess charge…

02:06

What are (a) the charge an…

02:40

A net charge of $5.0 \mu \…

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A small sphere with mass $…

09:52

12:26

A hollow, conducting spher…

04:10

A metal sphere of radius 1…

02:23

02:38

(II) A metal sphere of rad…

04:24

(II) A 32 -cm-diameter con…

04:19

Charge $Q=5.00 \mu \mathrm…

08:43

Suppose the conducting sph…

01:26

A charge of $1.50 \times 1…

so we will use the equation for potential to find the charge. The question is K Q. Divided by art. So from this you can find Q is equal to our times. We divided by kick, so we know it is 0.1 the radius, because we are given diameter as 0.2 meters potential where you went as 25 syllables, so that will be 25 times 10 Power three on dhe Value of K is nine times 10 power nine, as you know. So if you perform this calculation, you will get 2.78 times 10 power negative. Seven. Cool now, in part being, we are given information to find the kinetic energy because we're given mass and velocity so half times mass times three square. So how masses 0.1 milligram. That means it's changed our negative six year to make it kilograms. So Graham two kilogram gives us the factor of 10 power the and milligram to Obama's again to impersonate that used three. So makes it 10 power Negative. Six velocity is chain squared. Velocity squared is 10 square. So this will be 15 times 10 power. Negative. Five jewels. No attention when the charges accelerated by some potential difference of we. It gets the energy here. You q b. We can equate this, too, because we know that claim Trump is accelerated using this potential difference. So let's see. Quit them. We will get Q equal to K A. Divided by me. It's okay. Ease 0.5 times 10 Power negative by divided by the potential is 25 times 10 power three. So this will be 0.2 citywide point by by 25 times 10 Power Negative. Eight. This means two charges. Two times 10 power Negative. 10. So it's such a small charges there on the paint drop of which is reasonable as well Thank you.

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