What does an ecg technician do? operates a high-powered magnet that takes images of internal bodily structures operates an x-ray machine operates a machine that produces visible waves of electrical heart activity studies the presence and cause of disease in body tissues, fluids, and cells

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.