If an object on a horizontal frictionless surface is attached to a spring, displaced, and then released, it oscillates. suppose it is displaced 0.125 m from its equilibrium position and released with zero initial speed. after 0.860 s, its displacement is found to be 0.125 m on the opposite side and it has passed the equilibrium position once during this interval. find the amplitude of the motion.= the period of the motion.= the frequency of the motion.=

Zirconium has an hcp crystal structure and a density of 6.51 g/cm3. (a) what is the volume of its unit cell in m3? (b) if the c/a ratio is 1.593, compute the values of c and a.

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".