Amass is attached to the end of a spring and set into oscillation on a horizontal frictionless surface by releasing it from a compressed position. the record of time is started when the oscillating mass first passes through the equilibrium position, and the position of the mass at any time is described by x = (3.9 cm)sin[(9.3 rad/s)πt]. determine the following.

(a) frequency of the motion hz.
(b) period of the motion.
(c) amplitude of the motion cm.
(d) first time after t = 0 that the object reaches the position x = 2.6 cm

What will a positive and a negative charge do if they are separated from each other?

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?