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Imagine that you have a solid cylinder (M = 2 kg, R = 0.1m, I =12MR2) and have wound a very light wire around it many times. You then attach a block of mass m = 1kg to the end of the wire, and allow the block to fall (starting from rest), unwinding the string, which causes thecylinder to rotate. What is the block's speed just as it reaches the ground, 2 m below from where it started?
At t = 0, a stone is dropped from a cliff above a lake; 2.2 seconds later another stone is thrown downward from the same point with an initial speed of 48.0 m/s. Find the height of the cliff
1. in a particel accelerator protons are fired at a stationary target and collide elastically with the nuclei of the
A car accelerates from rest to a kinetic energy of 2.06 x 105 J in a distance of 638 m. How much force did the car's engine deliver to produce this acceleration.
Water flowing through a 1.8cm-diameter pipe can fill a 300L bathtub in 6.4 min. What is The speed of the water in m/s
If a car takes a banked curve at less than the ideal speed, friction is needed to keep it from sliding toward the inside of the curve, What is the minimum coefficient of friction needed for a frightened driver to take the same curve at 15.0 km/h
A baseball outfielder throws a 0.150 kg baseball at a speed of 45.0 m/s and an initial angle of 28.0°. Illustrate what is the kinetic energy of the baseball at the highest point of its trajectory?
The electron of a hydrogen atom makes a transition from the n= 5 state to the n = 2 state. What is the wavelength of the emitted photon?
In a cyclotron. why do particles having different speeds take the same amount of time to complete a one-half circle trip around on dee? what happens to T if you double magnetic field B?
A large, thin plastic disk wth diameter D=3.0 meters carries a uniformlydistributed charge of Q= -3.0 x 10^-5 C, Calculate the magnitude q of the charge on the left circular face of the foil
you send a beam of light from a material with index of refraction 1.23 into an unkown material. in order to help
a flat metal washer is heated. as the washers temperature increases what happens to the hole in the center? a flat
A sledge with bricks has a total mass of 180.0 kg and is pulled at a constant speed by a rope inclined at 20 degrees above the horizontal. The sledge moves a distance of 20 m on a horizontal surface.
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