Learning Goal: To understand how to calculate forces between charged particles, particularly the dependence on the sign of the charges and the distance between them. Coulomb's law describes the force that two charged particles exert on each other (by Newton's third law, those two forces must be equal and opposite). The force F21 exerted by particle 2 (with charge q₂) on particle 1 (with charge q1) is proportional to the charge of each particle and inversely proportional to the square of the distance r between them: F21 k 92 91 = 121, 21, where k = 1 Απευ and 21 is the unit vector pointing from particle 2 to particle 1. The force vector will be parallel or antiparallel to the direction of 121, parallel if the product 91 92 > 0 and antiparallel if q1 92 <0; the force is attractive if the charges are of opposite sign and repulsive if the charges are of the same sign. Figure particle 0 particle 1 x 1 of 3 >

Learning Goal: To understand how to calculate forces between charged particles, particularly the dependence on the sign of the charges and the distance between them. Coulomb's law describes the force that two charged particles exert on each other (by Newton's third law, those two forces must be equal and opposite). The force F21 exerted by particle 2 (with charge q₂) on particle 1 (with charge q1) is proportional to the charge of each particle and inversely proportional to the square of the distance r between them: F21 k 92 91 = 121, 21, where k = 1 Απευ and 21 is the unit vector pointing from particle 2 to particle 1. The force vector will be parallel or antiparallel to the direction of 121, parallel if the product 91 92 > 0 and antiparallel if q1 92 <0; the force is attractive if the charges are of opposite sign and repulsive if the charges are of the same sign. Figure particle 0 particle 1 x 1 of 3 >

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter18: Electric Charge And Electric Field

Section: Chapter Questions

Problem 27CQ: (a) What is the direction of the total Coulomb force on q in Figure 18.46 if q is negative, qa=...

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