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Conservation of Energy

Elastic Collision

What are the velocities of each of the two blocks after they collide? See attached file for full problem description.

Working with conservation of mechanical energy.

A 12 kg block is released from rest on a 30 degree frictionless incline. Below is a block that can be compressed 2.0 cm by a force of 270 N. The block momentarily stops when it compresses the spring by 5.5 cm. How far does the block move down the incline from its rest position to this stopping point? What is the speed of the bl

Calculating the velocity of a ball compressed into a spring.

In preparation for shooting a ball in a pinball machine, a spring (k= 675 N/m) is compressed by 0.0650 m relative to its unstrained length. The ball (m= 0.0585 kg) is at rest against the spring at point A. When the spring is released, the ball slides (without rolling) to point B, which is 0.300m higher than point A. How fast

Working with 2-D collisions within a laboratory frame.

A particle of mass m and velocity Vo collides elastically with a particle of mass M initially at rest and is scattered through angle, A, in the center of mass system. a) Find the final velocity of m in the laboratory system. b) Find the fractional loss of kinetic energy of m.

Conservation of momentum applied to moving charges.

Two identical particles of mass m carry a charge Q each. Initially one is at rest on a smooth horizontal plane and the other is projected along the plane directly towards the first particle from a large distance, with the speed v. Find the closest distance of approach.

Lienard-Weichert potentials for an antenna

Is it possible to work out the Magnetic and electric fields of a loop antenna using the Lienard-Weichert potentials ? I would like a detailed derivation of how this is done