A solid sphere of radius 40.0 cm has a total positive charge of 26.0 C uniformly distributed throughout its volume. Calculate the magnitude of the electric field (a) 0 cm, (b) 10.0 cm, (c) 40.0 cm, and (d) 60.0 cm from the center of the sphere

An electron is at rest just above the surface of a sphere with a radius of 2.6 and a uniformly distributed positive charge of 2.2 10 15 . Like a rocket blasting off from the Earth, the electron is given an initial speed radially outward from the sphere.

A solid disk of unknown mass ad known radius R is used as a pulley in a lab experiment, as shown. A small block of mass m is attached to a string, the other end of which is attached to the pulley and wrapped around it several times. The block of mass m is released from rest and takes a time t...

A uniformly charged ball of radius a and charge -Q is at the center of a hollow metal shell with inner radius b and outer radius c . The hollow sphere has net charge +2Q.

A small ball rolls around a horizontal circle at height y inside a frictionless hemispherical bowl of radius. Find an expression for the ball's angular velocity in terms of R, y and g. What is the minimum value of for which the ball can move in a circle? Express your answer in terms of...

A racing car travels in a circular track of radius 250 m. lf the car moves with a constant linear speed of 45.0 m/s; find (a) its angular speed and (b) the magnitude and direction of its acceleration.