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A sledge loaded with bricks has a total mass of 18.3 kg and is pulled at constant speed by a rope inclined at 19.7° above the horizontal. The sledge moves a distance of 19.4 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500.
(a) What is the tension in the rope?
(b) How much work is done by the rope on the sledge?
(c) What is the mechanical energy lost due to friction?
A 900- kg car collides with a 1300- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial speed of the lighter car (in km/h)
q. two spherical conductors are connected by a long conducting wire and a total charge of 20.0 muc is placed on this
a 3.7 kg box of running shoes slides on a horizontal frictionless table and collides with a 2.4 kg box of ballet slippers initially at rest on the edge of the table, at height h = 0.33 m. what is their kinetic energy just before they strike the flo..
What is its angular displacement in this time.
An electron enters a region of space containing a uniform 0.0000217-T magnetic field. Its speed is 189 m/s and it enters perpendicularly to the field. Find the radius of the electron\'s orbit
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Calculate the amount of work (in electron-volts) it would take to move an electron from 11.6 to 13.4 away from a +3.50 point charge.
The owner of a van installs a rear-window lens that has a focal length of -0.340 m. When the owner looks out through the lens at an object located directly behind the van, How far from the van is the object actually located
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