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Electric Forces...need help!
Two small plastic spheres each have a mass of 2.85 g and a charge of -39 nC. They are placed 3.06 cm apart (center to center).
A. What is the magnitude of the electric force on each sphere?
B. By what factor is the electric force on a sphere larger than its weight?
A. K*q*q / r^2 = 0.0146 N
B. I thought I could just do 0.0146 N / (0.00285kg * 9.81 m/s^2) = 0.523...is that right?
Homework Statement
Two small plastic spheres each have a mass of 2.85 g and a charge of -39 nC. They are placed 3.06 cm apart (center to center).
A. What is the magnitude of the electric force on each sphere?
B. By what factor is the electric force on a sphere larger than its weight?
Homework Equations
The Attempt at a Solution
A. K*q*q / r^2 = 0.0146 N
B. I thought I could just do 0.0146 N / (0.00285kg * 9.81 m/s^2) = 0.523...is that right?