Could someone help me solve this problem, or provide me with some hint on how to solve it? Two point charges, each +4.0μC, are on the x axis; one point charge is at the origin and the other is at x=8.0m. Determine the electric potential on the x axis at

(a) x=−2.0m

(b) x=10.0m

(c) At what point on the x axis is the electric potential zero?

Thanks!

Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]

What is the scientific definition of energy that relates to work

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.