I need help with number 12 please, using one of the equations. Thank you for your help. 8. What is the distance between two charges, +7.8 µC and +9.2 µC, if they exert a force of 4.5 mN oneach other?9.A –4.2 µC charge exerts an attractive force of 1.8 mN on a second charge which is a distance of 2.4m away. What is the magnitude and sign of the second charge?10. Two equal negative point charges repel each other with a force of 18.0 mN. What is the charge oneach object if the distance between them is 9.00 cm? How many extra electrons are on each object?11. Two charged conducting spheres have net charges of +4.0 µC and -8.0 µC and attract each otherwith a force of 16 mN. The spheres are brought into contact and then moved apart to the initialdistance. What is the new force between the spheres? Is this force attractive or repulsive?12. What is the ratio of the electrostatic force to the gravitational force between two electrons? solving for sulving forg salving forrfer2828.2.K=9x10?N-m²Craig Meeks31ace

12)the charge on an electron (q) = - 1.6×10-19 C mass of electron (m) = 9.11×10-31 kg Let the…

Answered: 12. What is the ratio of the…

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12. What is the ratio of the electrostatic force to the gravitational force between two electrons?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter15: Electric Forces And Fields

Section15.3: Electric Fields

Problem 15.3QQ: A test charge of + 3 C is at a point P where the electric field due to other charges is directed to...

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Question

I need help with number 12 please, using one of the equations. Thank you for your help.

8. What is the distance between two charges, +7.8 µC and +9.2 µC, if they exert a force of 4.5 mN on
each other?
9.
A –4.2 µC charge exerts an attractive force of 1.8 mN on a second charge which is a distance of 2.4
m away. What is the magnitude and sign of the second charge?
10. Two equal negative point charges repel each other with a force of 18.0 mN. What is the charge on
each object if the distance between them is 9.00 cm? How many extra electrons are on each object?
11. Two charged conducting spheres have net charges of +4.0 µC and -8.0 µC and attract each other
with a force of 16 mN. The spheres are brought into contact and then moved apart to the initial
distance. What is the new force between the spheres? Is this force attractive or repulsive?
12. What is the ratio of the electrostatic force to the gravitational force between two electrons?

solving for sulving forg salving forr
fer2
82
8.
2.
K=9x10?
N-m²
Craig Meeks
31
ace

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