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?
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?
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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I need help with number 9 please, using one of the questions. Thank you in advance.
Transcribed Image Text: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?
Transcribed Image Text:solving for sulving forg salving forr
fer2
82
8.
2.
K=9x10?
N-m²
Craig Meeks
31
ace
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