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12) The amount of electrical energy stored in a system of two charged particles a distance...

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Physics

12) The amount of electrical energy stored in a system of twocharged particles a distance dd apart is

UE(d)=kq1q2/d

where particle 1 has charge q1, particle 2 has charge q2, andCoulomb's constant has the value k=k= 8.99×109 Nm22/C22.

Suppose that you have two particles of charge q1=7q1=7 nC andq2=−7q2=−7 nC. Let's say that you hold the positively chargedparticle in a fixed position while you steadily move the negativelycharged particle farther and farther away at a constant speed of 3m/s. The distance between the particles therefore changes accordingto the usual distance formula

d(t)=di+vt,

where v is the given speed and di=3 mm is their initialseparation distance.

How much power do you deliver to the system at the time t=1s as yousteadily separate the particles?

Answer & Explanation Solved by verified expert
4.4 Ratings (885 Votes)
Initially the two charged particle was separated by 3 mm or 3 x103 mSo the    See Answer
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