The direction would be towards the sphere with the charge of -6 x 10^-7 C, right?
So if the potentials are the same I just use the equation kQ1/r1 = kQ2/r2? I know k and the radii. What would i put in for the Q's?
Homework Statement
Constant in Coulomb's Law: k = 9 x 10^9 Nm^2/C^2
1) Two metal spheres are each given a charge as shown below. They are initially placed 30 cm from one another (center-to-center distance). (Qa = -6 x 10^-7 C) (Qb = -4 x 10^-7 C) (Ra = 5cm) (Rb=2cm).
A) For purposes of...
Homework Statement
In order to hold a book of mass m stationary against a wall, you must push horizontally with a force of at least P.
a. make a force diagram and find the coefficient of static friction
b. calculate the coefficient of static friction for the wall and book when at least a...