See picture below

An object is vibrating on a spring with the following equation of motion: x = (0.25 m) cos (n/80 t) . (a) What are the amplitude and angular frequency? . (b) Find the frequency (f) and period (T): . (c) What is the object's position at a time t = 1.0 s? (Make sure your calculator is in radians mode for this one.) ELECTRIC FIELD FROM TWO CHARGES PRACTICE PROBLEM 3 X Y Sketch the electric field at each of the y points X, Y, and Z. X (2 91 = 1 C 92 = 1 C X X 2 Zo (2 91 = 1 C 92 = - 2 C 91 = 1 C, 92 = +2 C