5: And still more complex oscillations (6 points) Tell me the amplitude and period (1 point each, 2 points per part) of each of the following oscillations: (a) The displacement of a mass on a spring: :r(t) = Re (5cm an ems1\") (b) The electric eld associated with a beam of red light, measured at a particular point in space: Eu) = Re (80%;? * 63*1015is'1t) (c) The pressure in a sound wave: P05) = Re (lPa * e'2690i51')