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Which of the following statements is true for an elastic collision?A. Both momentum and kinetic energy are conserved.B. Momentum is conserved, but kinetic energy is not conserved.C. Kinetic energy is conserved, but momentum is not conserved.D. The amount of momentum lost by one object is the same as the amount gained by the other object.E. The amount of kinetic energy lost by one object is the same as the amount gained by the other object.
q1. gamma-ray busters are objects in the universe that emit pulses of gamma rays with high energies. the frequency of
A sled with mass 7.80 moves in a straight line on a frictionless horizontal surface. find the force acting on the sled
A solid sphere with a radius of 9.3 cm an mass of 373 g is allowed to roll 4.30 m without slipping down a 13.2 degree incline. What is the moment of inertia of the sphere
Chromium is produced by reacting with its oxide with aluminium. If 304 g of Cr2O3 and 108 g of Al completely react to form 204 g of Al2O3 how many grams of Cr are formed.
A 3000-kg Ferris wheel accelerates from rest to an angular speed of 0.17rad/s in 11s, calculate the net torque on the wheel
What mass of water at 29.0°C added to a Styrofoam cup containing two 60.0 g ice cubes from a freezer at -16.0°C will result in a final temperature of 5.00°C for the drink? Explain it.
A submarine (sub A) travels through water at a speed of 10.00m/s, emitting a sonar wave at a frequency of 1500 Hz. find the sound velocity in this water
A 67.5 kg person sits on a 3.77 kg chair. Calculate the pressure exerted on the floor by each leg of the chair, assuming the weight is evenly distributed
In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.12 106 m/s. Find the centripetal acceleration of the electron
A box of mass m = 5 kg sits at the top of a ramp of mass M = 20 kg and height h = 2.0 m with incline angle ? = 30°. What are the final velocities (magnitude and direction) of the ramp and the box
At the same instant that a 2.0-kg ball is dropped from 50 m above Earth, a second ball, What is the velocity of the center-of-mass of the two-ball system 0.5 seconds after the balls are released
The ball loses contact with the spring and leaves the gun when the spring is still compressed by 12 cm. Elucidate what is the speed of the ball when it hits the ground, 1.4 m below the spring gun?
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