16. The charges in the figure below are at the vertices of a right triangle, and

Question

16. The charges in the figure below are at the vertices of a right triangle, and are given in micro-coulombs (1 muC = 1.0 x 10^-6 C). What is the total electric force (in newtons) on the -0.60 mu C charge? Note that the distances are in centimeters. (a) 1.64 (b) 2.05 (c) 2.32 (d) 1.14 (e) none of these 17. An object of charge Q is 0.5 m away from a charge 2Q. How far (in m) from the smaller charge would the net electric force on a third charge q be zero? (a) 0.09 (b) 0.18 (c) 0.14 (d) 0.21 (e) none of these 18. Three protons are at the vertices of an equilateral triangle of side length 2 m. A fourth proton is placed at the midpoint of the base of? the triangle. What is the net force on the proton at the midpoint? (a) 7.68 x l0^-29 N (b) 5.43 x 10^-29N (c) 4.12 x 10^-29N (d) 2.02 x 10^-29N (e) none of these

Explanation / Answer

1. 2.175 N , e- none of these

2. d 21 cm

3. a. 7.68*10-29 N

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