How does a centripetal force cause circular motion

centripetal force is the force that acts on a body moving in a circular part

Explanation:

Centripetal force is just that force that acts on a body moving around a circular path keeping it in place

While centrifugal force is the force that is directed away from the center of rotation of an object, centrifugal force is a pseudo force

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

i believe the answer would be:

d. violin, clarinet, french horn, and tuba