Share
Explore BrainMass

Conservation of Energy

Shooting the Breeze

Please do not place your response in a .pdf or .cdx format, but Word documents are okay. Thanks! Please see attached for actual problem. Note that I only need help with the last part of this problem!

Question about Momentum, collisions

There are two main types of collisions that you will study: elastic and perfectly inelastic. In an elastic collision, kinetic energy is conserved. In a perfectly inelastic collision, the particles stick together and thus have the same velocity after the collision. There is actually a range of collision types, with elastic and pe

Heat exchange occurs between three objects. Apply conservation of energy.

An aluminum rod has a mass of 4.5 kg and is initially at room temperature of 23 degrees Celsius. The rod is dropped into an aluminum tank whose mass is 1.22 kg, containing an unknown mass of water. The tank and the water are at 96 degrees Celsius. Heat exchange occurs only between the rod, the tank and the water, all of which e

Adiabatic process and the equation of state.

A sample of 8.02 x 10^-1 moles of nitrogen gas (gamma=1.40) occupies a volume of 2.00 x 10^-2 m^3 at a pressure of 1.00 x 10^5 Pa and temperature 300K. the sample is adiabatically compressed to half its original volume, nitrogen behaves as an ideal gas under these conditions. Show from the adiabatic condition and the equation of

Potential Energy

A 5.00-kg block free to move on a horizontal, frictionless surface is attached to one end of a light horizontal spring. The other end of the spring is held fixed. The spring is compressed 0.100 m from equilibrium and released. The speed of the block is 1.20 m/s when it passes the equilibrium position of the spring. The same

Physics around an Object Towed up and Incline

An object on an incline of 30 degrees is towed up the incline by an applied force of 100N. The coefficient of kinetic friction of mu=.35. The mass of the object is 10.0kg. PART I 1) Draw a sketch 2) Draw a free body diagram 3) What is the weight of the object? 4) What is the acceleration of the object in the y direction?

Find the relation between the displacements of block A and block B.

Please see attachments, weights are in pounds force not pounds mass. Blocks A and B weigh 8lb and 3lb respectively and are connected by a cord-pulley system and released from rest with the spring undeformed. knowing the spring constant K determine the velocity of block B after it has moved 6 inches. The find the maximal veloc

Momentum in 2 dimensions

The picture (attached) shows two pucks about to collide and one of them after the collision, what is the velocity (Magnitude and Direction) of the .4 kg puck after the collision? (The point of the question is to use the conservation of momentum equations) Two blobs of clay have the initial velocities shown below. The velocit

Energy Theorem and Kinetic Energy: Coefficient of Friction

Question: A 16-kg sled is being pulled along the horizontal snow-covered ground by a force of 24 N. Starting from rest, the sled attains a speed of 2.0 m/s in 8.0 m. Find the coefficient of kinetic friction between the runners of the sled and the snow.

Linear momentum

"A spring of negligible mass is compressed between two masses on a frictionless table with upward sloping ramps at each end. The masses are released simultaneously. The mass of M1 is less than the mass of M2. A) Is the force exerted by the spring on M1 greater than, equal to, or less than the force it exerts on M2? B) Is the

Conservation of momentum and kinetic energy: Superball and elastic collisions

A superball has collisions that are nearly perfectly elastic. A superball of mass M is dropped from rest from a height h (where h >> the size of the superball) together with a smaller marble, of mass m; the marble is initially just a little above the top of the superball and remains right over it throughout the fall. The superba

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