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A 15 kg block is on a ramp which is inclined at 20° above the horizontal. It is connected by a string to a 28 kg mass which hangs over the top edge of the ramp. Assuming that frictional forces may be neglected, what is the magnitude of the acceleration of the 28 kg block?
A skier traveling 11.0 m/s reaches the foot of a steady upward 18.0° incline and glides 13.2 m up along this slope before coming to rest. What was the average coefficient of friction?
Red light of wavelength 633nm from a helium-neon laser passes through a slit 0.370mm wide. What is the width of the central bright fringe
Two objects of the same mass move along the same line in opposite directions. The first mass is moving with speed. What was the speed of the second mass before the collision
A lottery machine uses blowing air to keep 2000 Ping-Pong balls bouncing around inside a 1.0m X 1.0m X1.0m box. What is the mean free path between collisions
5.00 kg of liquid water is heated to 100.0 °C in a closed system. At this temperature, the density of liquid water is 958 kg/m3. The pressure is maintained at atmospheric pressure of 1.01 x 105 Pa. A moveable piston of negligible weight rests on t..
a father racing his son has half the kinetic energy of the son who has half the mass of the father.the father speeds up
An eyepiece of 2.6- cm focal length and an objective of 0.32- cm focal length are used in a standard microscope
question a small block of mass m is given and initial speed vo up a ramp inclined at angle theta to the horizontal. it
A cement block accidentally falls from rest from the ledge of a 74.8-m-high building. When the block is 18.4 m above the ground, a man, 2.10 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have ..
A 217-kg log is pulled up a ramp by means of a rope that isparallel to the surface of the ramp. The ramp is inclined at30.0° with respect to the horizontal. The coefficient ofkinetic friction between the log and the ramp is 0.860, and the loghas a..
Two flat surfaces are exposed to a uniform, horizontalmagnetic field of magnitude 0.47T. When viewed edge-on, the firstsurface is tilted at an angle of 12 degrees from the horizontal,and a net magnetic flux of 8.4E-3 WB passes through it.
A U-shaped tube is filled mostly with water, but some vegetable oil has been added to both sides of the U tube. Find the difference in fluid level between the two sides of the tube
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