Friday
March 27, 2015

Homework Help: Physics

Posted by Jim on Thursday, August 30, 2007 at 9:46pm.

Can you please provide me a starting point for these two questions

Question One:

Three charges are located on the +x axis as follows: q1 = +26 C at x = 0 m, q2 = +13 C at x = +2.0 m, and q3 = +42 C at x = +3.5 m.

(a) Find the electrostatic force (magnitude and direction) acting on q2.
_______ N

+x
-x
+y
-y

(b) Suppose q2 were -13 C, rather than +13 C. Without performing any further detailed calculations, specify the magnitude and direction of the force exerted on q2.
_______ N

-y
-x
+y
+x

Question Two:
In a vacuum, two particles have charges of q1 and q2, where q1 = +3.5 C. They are separated by a distance of 0.25 m, and particle 1 experiences an attractive force of 2.3 N. What is q2 (magnitude and sign)?
______ C

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