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On the ride "Barrel of Fun" at an amusement park, people can bepinned against the vertical wall of a rotating barrel cylinderwithout falling to the floor. Which of the following statements are true?
1) The ride is possible because there is a force that pushes therider against the wall2) As long as the barrel is rotating, the rider will not fall3) The smoother the surface of the wall, the slower it must rotateto keep the rider pinned4) The centripetal force is provided by friction5) The force that balances the weight is the kinetic friction
A person jumps up and down on a trampoline, while staying in contact with it. The motion is simple harmonic motion and it takes 1.90s to complete one cycle.
A light rigid rod 1.00 in lngth rotates about an axisperpendicular to its length and through its center. What is the angular momentum of the system
Scientists are working on a new technique to kill cancer cells by zapping them with ultrahigh-energy (in the range of 1Ã-1012 Watts, What is the maximum value of the electric field in the pulse
a explain the function of the activator added in trace quantities to many inorganic scintillators. why are activators
A 40.6 kg keg of beer rolls down a 3.40 m long plank leading from the flatbed of a truck 0.880 m above the ground
The Earth's nearly circular orbit around the sun has a diameter of 300 million km. Assuming it takes 365 days for the Earth to make one complete trip around the sun, find the acceleration of the Earth toward the sun.
A horizontal beam of electrons initially moving at 4.1 107 m/s is deflected vertically by the vertical electric field between oppositely charged parallel plates.
You pull downward with a force of 30N on a rope that passes over a disk-shaped pulley of mass 1.2kg and radius 0.075m, Find the linear acceleration of the 0.69kg mass.
imagine you are standing in front of standard mirror. in order for you to be able to see a full-length view of yourself
Quarterback passed a ball to a receiver while running at 1.5 m/s forward. The ball was released at a height of 2.5 meters with an angle of 45 degrees, Find the final velocity of the ball and its direction
In preparation for a demonstration on conservation of energy, a professor attaches a 7.2-kg bowling ball to a 2.9-m-long rope. Find the force the professor is exerting on the ball
Define proton-proton chain efficiently
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