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A 2.00 kg piece of wood slides on the surface shown in the accompanying figure. All parts of the surface are frictionless, except for a 30.0 m -long rough segment at the bottom, where the coefficient of kinetic friction with the wood is 0.200. The wood starts from rest 3.00 m above the bottom.
Where will the wood eventually come to rest?
How much work is done by friction by the time the wood stops?
If you twirl a small 9.0-g wooden ball in a circle at 3.0 revolutions per second on a light 11-cm string, approximately how many units of angular momentum does it have
A 4.5kg ball with a velocity of 4.0m/s in the+x-direction collides head-on elastically with a stationary 1.8kg ball. What is the speed of the first ball after the collision
A negative charge of -0.525%u03BCC exerts an upward 0.205N force on an unknown charge 0.310m directly below it. What is the unknown charge in microcoulombs
A 60 kg person drops from rest a distance of 1.20m to a platform of negligible mass supported by a stiff spring. The platform drops 6cm before the person comes to rest.
Two wires shown below carry currents of 1 amp out of the page and 9 amps into the page. The two wires are separated by 4 meters. Where is the magnetic field zero due to these two wires?
A stick is resting on a concrete step with 2/5 of its length hanging over the edge. A single ladybug lands on the end of the stick hanging over the edge, and the stick begins to tip. obtain the magnitude of the angular acceleration of the stick
Observations of a certain galaxy show that stars at a distance of 16 pc from the center of the galaxy orbit a central supermassive black hole at a speed of 200 km/s
A 145 g wire is held under a tension of 258 N with one end at x = 0 and the other at x = 13.0 m. At time t = 0, pulse 1 is sent along the wire from the end at x = 13.0 m. At time t = 30.9 ms, pulse 2 is sent along the wire from the end at x = 0. A..
A stone is dropped from the top of a cliff at t=0. The splash it makes when striking the water below is heard 6 seconds after it is dropped (i.e. at t=6 sec). How high is the cliff? (i.e. find 'h') suppose that the speed of sound in air is 340m/s ..
A concave mirror has a radius of curvature of 24cm. Determine the object position for which the resulting image is upright, draw a ray diagram to determine the position of the image
A camera is supplied with two interchangeable lenses, whose focal lengths are 35.0 and 150.0 mm. What is the height (including sign) of her image on the film
A girl kicks a ball from ground level. The initial velocity of the ball has an x component of 17 m/s and a y component of 10 m/s. What is the highest elevation reached by the ball
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