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Three charged particles are located at the corners of an equilateral triangle as

ID: 2274088 • Letter: T

Question

Three charged particles are located at the corners of an equilateral triangle as shown in the figure below (let q = 1.80

Three charged particles are located at the corners of an equilateral triangle as shown in the figure below (let q = 1.80 muC, and L = 0.430 m). Calculate the total electric force on the 7.00-muC charge. Three charged particles are located at the corners of an equilateral triangle as shown in the figure below (let q = 1.80 muC, and L = 0.430 m). Calculate the total electric force on the 7.00-muC charge.

Explanation / Answer

a)

Fx = 8.99e9 * 4e-6 * 7e-6/(0.430*0.430) + 8.99e9 * 1.80e-6 * 7e-6/(0.430*0.430)

==> Fx = 0.98700 N


Fy = -8.99e9 * 4e-6 * 7e-6/(0.430*0.430) + 8.99e9 * 1.80e-6 * 7e-6/(0.430*0.430)

==> Fy = -0.64845 N


F = sqrt(0.98700*0.98700+0.64845*0.64845) = 1.18 N




b)

theta = 360 - arctan(0.64845/0.98700) = 327 degrees

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