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Use the virial theorem to derive the Bonnor-Ebert instability. Explain the physics of the Bonnor-Ebert instability in as much detail as possible.
A child and sled with a combined mass of 49.20 kg slide down a frictionless hill that is 7.38 m high. If the sled starts from rest, what is its speed at the bottom of hill.
A ballerina spins initially at 1.06 revs/second when her arms are extended. She then draws in her arms to the body, find the work involved in increasing her angular speed
A father racing his son has three-fifths the kinetic energy of the son, who has two-fifths the mass of the father. The father speeds up by 2.5 m/s, What is the original speed of the father
In a new (inelastic) collision, the same two bumper cars with the same initial velocities now latch together as they collide. What is the final speed of the two bumper cars after the collision
A 0.065-kg tennis ball moving to the right with a speed of 15 m/s is struck by a tennis racket, compute the magnitude of the average force exerted on the ball?
The active element of a certain laser is an ordinary glass rod 19.5 cm long and 1.37 cm in diameter. Calculate its increase in volume
Two astronauts are, 4.86 m apart in their spaceship, speaking to each other. How far away from the Earth is the spaceship
The two wires of length 2 m are 3 mm apart and carry a current of 10 A dc. Calculate the force between these wires
A rock is thrown vertically upward with a speed of 17.0 m/s from the roof of a building that is 70.0 m above the ground. Assume free fall. What is the speed of the rock just before it strikes the ground
q1. a gun shoots bullets that leave the muzzle with a speed of 326 ms. if a bullet is to hit a target 172 m away at the
While moving down the track at 10.0 m/s, you uniformly accelerate to 32.0 m/s in 10 s. Illustrate what is the average net force that you have applied to the car during the 10 s interval?
Consider the motion of a muon as it moves through the Earth's atmosphere. After a time ? = 2.20 multiply.gif 10-6 s, What is the speed of the muon
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