Asmall putty ball of mass m = 1.2 kg moving at v = 3 m/s strikes the end of a bar of mass m = 20 kg and length l = 0.7 m. the ball sticks to the bar. the bar is attached to a frictionless pivot and is initially at rest and hanging vertically.

Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?