CES Question 1 In the figure seven charged particles are fred in place to form a...

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science physics

Answer 1

Answer #1

Answer:

The electrostatic potential energy between the two charges U is equal to the work done.

If we bring a particle with +6e charge from infinity to the center of the square, we need to do some work W.

The total work done is W = k [(+6e)(+3e)/r + (+6e)(-3e)/r + (+6e)(+e)/r + (+6e)(-e)/r + (+6e)(+2e)/r + (+6e)(-2e)/r + (+6e)(+3e)/r]

Thus, W = k (6e)(+3e)/r = 18ke²/r where k = 1/4 $\pi$ $\varepsilon$ ₀ = 9 x 10⁹ N.m²/C²

Since remaining parts are cancel with each other.

The edge length is 2.6 cm, then, r = 2.6cm/2 = 1.3 cm = 0.013 m

Therefore, W = 18 (9 x 10⁹ N.m²/C²) (1.6 x 10^-19 C)² / (0.013 m) = 3.190 x 10^-25 J

Answer 2

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