What is hunter the dog's centripetal acceleration when he runs along a circular path of radius 2.0 meters with a tangential speed of 2.2 meters/second?

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

the force required to move the cart is divided by three or 33.33 n.