Wo balls have the same mass of 5.00 kg. suppose that these two balls are attached to a rigid massless rod of length 2l, where l = 0.550 m. one is attached at one end of the rod and the other at the middle of the rod. if the rod is held by the open end and rotates in a circular motion with angular speed of 45.6 revolutions per second,

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants