If an object on a horizontal frictionless surface is attached to a spring, displaced, and then released, it will oscillate. If it is displaced a distance 0.130 mm from its equilibrium position and released with zero initial speed, then after a time 0.815 ss its displacement is found to be a distance 0.130 mm on the opposite side, and it has passed the equilibrium position once during this interval. Required:
a. Find the amplitude.
b. Find the period.
c. Find the frequency.

Apositive rod is placed to the left of sphere a, and the spheres are separated. which best describes the spheres? sphere a is negative and sphere b is positive because protons from sphere a are attracted to the rod and move to sphere b. sphere a is negative and sphere b is positive because electrons from sphere b are attracted to the rod and move to sphere a. sphere a is positive and sphere b is negative because electrons from the rod move to sphere b and protons then move to sphere a. sphere a is positive and sphere b is negative because protons move from sphere b to the rod and also to sphere a.

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