Active Figure 23.6 - Coulomb\'sLaw Instructions: Use the following active figure

Question

Active Figure 23.6 - Coulomb'sLaw

Instructions: Use the following active figure tocomplete the sections below. Click on one of the charges and moveit with your mouse to change the separation distance.

Explore
Two charged particles with charges of Q1 =280 µC and Q2= 157 µC are a distance of 1 cmapart.
(A) Find the force that Q1 exerts onQ2.
(B) Find the force that Q2 exerts onQ1.
(C) If the distance between the charges is increased to1.0 times their initial separation,how is the force between them changed?

Conceptualize
Use the Active Figure to visualize the situation. The two chargesare a specified distance apart, exerting forces on each other thatare proportional to the product of their charges and inverselyproportional to the square of the distance between them. Thedirection of the force is along the line joining the particles.

Categorize
This is a problem in applying Coulomb's law to calculate theelectric force between two charges.

(C) If the distance betweenthe charges is increased to 1.0 timestheir initial separation, how is the force between them changed?Analyze
Replace r by (1.0)rin Coulomb's law to obtain

12 =ke q1q2 r2

Explanation / Answer

(B)    Answer to part B is the same as theanswer to part A, but NEGATIVE (I guess that's what it wantsbecause it didnt accept the same answer as positive). - (C)   Answer to part C is the same as the answer topart A, because the distance is multiplied by 1.0... which meansthe distance did not change!! So the answer remains thesame.

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