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A solid, uniform disk of radius 0.250 m and mass 61.6 kg rolls down a ramp of length 4.60 m that makes an angle of 16° with the horizontal. The disk starts from rest from the top of the ramp.
(a) Find the speed of the disk's center of mass when it reaches the bottom of the ramp.
m/s
(b) Find the angular speed of the disk at the bottom of the ramp.
rad/s
Electrons are accelerated so that their de Broglie wavelength is .083nm. What is the kinetic energy of the electrons so that they have this de Broglie wavelength
Radio astronomers often study the radiation emitted by a hydrogen atom from a transition between the two hyperfine levels associated with the ground state
Compare the difference between the insolation on the north and south faces in each session with the seasonal variation on each face. Ignore eccentricity and atmospheric absorption.
In the figure, a 4.0 kg block slides along a track from one level to a higher level after passing through an intermediate valley. The track is frictionless until the block reaches the higher level. There a frictional force stops the block in a distan..
A bottle of saline solution (with a specific gravity of 1.02) is attached to a 1.2 m long piece of tubing with a 1.0 cm inner diameter. If the tubing is held vertically, filled with saline, and clamped at the bottom, (a) what is the gauge pressure at..
Two of Angie's friends are talking to each other at a distance of 3.0 m from where Angie stands. What sound intensity does he measure for the two talkers
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A small box of mass 9 kg is placed on top of a large box with a mass 11 times that of the small box. find the magnitude of the frictional force acting on the small box
Two teams of nine members each engage in a tug of war. The first team's members have average masses of 73 kg, What is the acceleration of the two teams
Two soccer players start from rest, 47 m apart. They run directly toward each other, both players accelerating. At the instant they collide, how far has the first player run
A pump is required to lift 750 liters of water per minute from a well 17.0m deep and eject it with a speed of 19.0, How much work per minute does the pump do
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