Author Question: A particle (charge = +40 mC) is located on the x axis at the point x = -20 cm, and a second particle ... (Read 110 times)

misspop · **on:** Jul 28, 2018

A particle (charge = +40 mC) is located on the x axis at the point x = -20 cm, and a second particle (charge = -50 mC) is placed on the x axis at x = +30 cm. What is the magnitude of the total electrostatic force on a third particle (charge = -4.0 mC) placed at the origin (x = 0)?
a. 41 N
b. 16 N
c. 56 N
d. 35 N
e. 72 N

Question 2

Each of two small non-conducting spheres is charged positively, the combined charge being 40 mC. When the two spheres are 50 cm apart, each sphere is repelled from the other by a force of magnitude 2.0 N. Determine the magnitude of the smaller of the two charges.
a. 1.4 mC
b. 1.1 mC
c. 2.0 mC
d. 3.3 mC
e. 17 mC