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An elevator is moving downwards at 4m/s when suddenly someone hits the stop button and it travels another 2.9 m before coming to a rest. please solve for the acceleration and the change in time.
You push a box up a ramp inclined at 26.2o using a force of 230.0N, for a distance of 10.9 m. How much work do you do in the horizontal direction
an 8.20 kg crate is pulled up a 30-degree incline by a person pulling on a rope that makes an 17.0-degree angle with
a child is in danger of drowning in the merimac river. the merimac river has a current of 3.4 kmhr to the east. the
The driver of an 1800 {kg} car travelling on a horizontal road at 100 kmh suddenly applies the brakes. Because of a slippery pavement, the friction of the road on the tires of the car, which is what slows down the car, is 20.0 percent of the weight o..
A sound source emits sounds of frequency 210 Hz that travel through still air at 340 m/s. This sound source moves with a speed of 75 m/s relative to still air toward a stationary listener.
A merry-go-round starts from rest and accelerates uniformly over 11.0 s to a final angular velocity of 7.50 rev/min, Find the angular acceleration of the merry-go-round
Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields generated by electric transmission lines. What is the magnetic field strength on the ground directly under such a transmissi..
you throw a superball so that it bounces off the floor then off the underside of a table then off the floor again. what
The mass of the sun is 1.99×1030kg and its distance to the Earth is 1.50×1011m. What is the gravitational force of the sun on the earth
A person walks into a room that has two flat mirrors on opposite walls. The mirrors produce multiple images of the person. Consider only the images formed in the mirror on the left.
Find the weight of the hanging mass when the spring, with spring constant 15.5 kN/m , has been stretched 15.1cm
Four protons and four electrons are located inside a pyramid and are separate from each other, What is the net value of electric flux through the surface of the pyramid
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