Two metal balls have charges of 7.1 × 10-6 coulombs and 6.9 × 10-6 coulombs. they are 5.7 × 10-1 meters apart. what is the force of interaction between the two balls? (k = 9.0 × 109 newton·meters2/coulomb2)

When a resistor with resistance r is connected to a 1.50-v flashlight battery, the resistor consumes 0.0625 w of electrical power. (throughout, assume that each battery has negligible internal resistance.) what power does the resistor consume if it is connected to a 12.6-v car battery? assume that r remains constant when the power consumption changes.

Describe the path of the electric current through a circuit?

If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .