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Three point charges are located on the x-axis. The first charge, q1 = 10.0 µC, is at x = -1.00 m; the second charge, q2 = 20.0 µC, is at the origin; and the third charge, q3 = -30.0 µC, is located at x = 2.00 m. Which charge is subjected to the force of greatest magnitude?
q1
q2
q3
q1 and q2 (equal)
q2 and q3 (equal)

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asked by roudha
  1. net force on q1: kq1q2/1^2+kq1q2/3^2= k(10*20)/1+k(10(-30))/9
    = k 200-33 to left Ignoring units
    net chage on q2: kq2q1/1^2 +kq2q3/2^2= 200k (to left) +600k/4 to right
    = k150 to left
    net force on q3= kq3q1/9 (to left) + kq3q2/4
    = k30/9 to left + k600/9 (to left) + k30*20/4 to left
    = k217 to left
    check my math and direction of forces

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