A spherical shell of radius 15 cm carries 4.8 muC, distributed uniformly over its surface. At the center of the shell is a point charge. If the electric field at the surface of the sphere is 750kN/C and points outward, what is the charge of the point charge? What is the field just inside the...

A 96 g cube of ice at 0 C is dropped into 1.0 kg of water that was originally at 70 C. What is the final temperature of the water after the ice has melted?

A particle with a charge of - 3.00 {\rm \mu C} is placed at the point P described in part A. What is the magnitude of the force exerted by the particle on the ring?

A scheme for a modern-day Fountain of Youth is introduced by a marketing company. Their idea is to launch their clients on a round trip at relativistic speeds. Their ads proclaim: "After 10 years have elapsed on Earth, you will only have aged 5 years!" Will the passengers enjoy...

Consider a box on a relativistic train car, moving at 0.866c along the positive x axis as viewed from the Earth. The length of the box along the x axis, as measured by Earth observers, will be only half of its proper length. If V is the volume of the box measured by an observer on the train, what...

An interstellar spacecraft races by the Earth at a velocity of 1.85 108 m/s, as measured by observers on the Earth. The spacecraft's galley cook places a pot of Minute rice on the stove for exactly 60.0 s, according to his watch. How long will the pot have been on the stove according to...

What current is required in the windings of a long solenoid that has 950 turns uniformly distributed over a length of 0.380 m in order to produce a magnetic field of magnitude 1.00 10-4 T at the center of the solenoid? 1 mA

At a distance of 3.0 m from a siren, the sound intensity is 3.6 10-2 W/m2. Assuming that the siren radiates sound uniformly in all directions, find the total power radiated.

The greenish blue of water is evidence for the

What is the minimum thickness of a soap bubble film (n = 1.46) on which light of wave length 500 nm shines, assuming one observes constructive interference of the reflected light?