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A 6.00 kg block starts from rest and slides down a frictionless surface incline. When the block has slid a distance 2.00 m its speed is 3.00 m/s. At what angle above horizontal is the inclined plane titled?
A 2-kg box is initially sliding at a speed of 15 m/s on a horizontal surface. What is the coefficient of kinetic friction between the box and the horizontal surface
A 100kg box slides down a ramp that has 60.0degrees slope. The coefficient of kinetic friction between the box and the ramp is 0.250. What is the work done by the gravitational force
The wavelength of the laser beam used in a compact disc player is 510 nm. Estimate the spacing between the slits of the grating
In the Compton effect, an X-ray photon of wavelength 0.31 nm is incident on a stationary electron. What is the wavelength of the scattered photon
A negative charge moves in the direction of a uniform electric field. Does the charge move to a position of higher or lower potential
A sailboat leaves a harbor and sails 1.80 km in the direction 65 degrees sounth of east, the boath then sails 1.1 km in the direction 15 degrees north of east. the trip takes 15 minutes. what is the magnitude and direction.
A vertical spring has one end attached to the ceiling and a 2.50-kg fish attached to the other one. find how fast the fish is moving after it drops 20.0 cm
A father racing his son has half the kinetic energy of the son, who has one-third the mass of the father, What is the original speed of the father
Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak
Two horizontal curves on a bobsled run at the similar angle, but one has twice the radius of the other. The safe speed (no friction needed to stay on the run) for the smaller radius to curve is v. What is the safe speed on the larger radius curve.
A thief was trying to pull a 20 kg coffer (a coffer is a box usually used to hold valuables) along an essentially frictionless horizontal surface. What was the work done on the coffer by the rope
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