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A 15.0 kg box initially sits at the bottom of a frictionless ramp. It is pulled by a cable to the top of the ramp, which is 2.5 m higher than the bottom of the ramp, and brought to a stop. How much work does each force acting on the box do during the lift?
An 80kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 350N. For the first 12m the floor is frictionless, and for the next 16m the coefficient of kinetic friction is .44. What is the final speed of the crate? ..
orville walks 318 m due east. He then continues walking along the straight line, but in a different direction, and stops 164 m northeast of his starting point. How far did he walk during the second portion of trip and in what direction.
A person is riding a bicycle, and its wheels have an angular velocity of 22.7 rad/s. What is the anguar acceleration (in rad/s2) of each wheel
accelerates it to the right. It is observed that it takes the box 3.7 seconds to travel 61 meters. Illustrate what is the magnitude of the force?
For a standard production car, the highest road-tested acceleration ever reported occurred in 1993, Find the magnitude of the car's acceleration
Two parallel plates of 10-4 m2 in area aregiven equal and opposite charges of 10-7 C. The spacebetween the plates is filled with a dielectric material and the electric field within the dielectric is 3.3×10-5N/C. Determine the dielectric constant of t..
A 1967 Kennedy half-dollar has a mass of 1.150 x 10-2 kg. The coin is a mixture of silver and copper, and in water weighs 0.1012 N. Determine the mass of silver in the coin
Richard is driving home to visit his parents. 140 mi of the trip are on the interstate highway where the speed limit is 65 mph. How many minutes does he save
Integrated circuits are manufactured in vacuum chambers in which the air pressure is 6.00×10?11 mm of Hg, determine the mean free path of a molecule
I was very nearly hit by a car. Fortunately, the car honked its horn and I jumped out of the way. But I noticed that the frequency of the horn as the car approached me was a factor 1.171 higher than its frequency after the car passed me and was m..
A 2.3 box, starting from rest, is pushed up a ramp by a 10 force parallel to the ramp. The ramp is 2.0long and tilted at 17 . The speed of the box at the top of the ramp is 0.80 .
A Carnot engine operates between reservoirs at 550K and 300K, discarding 1500 J of heat in each cycle. determine the engine's efficiency
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