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A train has a mass of 5.86E+6 kg and is moving at 57.7 km/hr. The engineer applies the brakes, which results in a net backward force of 1.45E+6 N on the train. The brakes are held on for 34.8 s. What is the new speed of the train? how far does it travel during this period?
A rigid rod of length L= 1.0 m and mass M = 2.5 kg is attached to a pivot mounted d = 0.17 m from one end. The rod can rotate in the vertical plane, and is influenced by gravity. What is the period for small oscillations of the pendulum shown? T =
A person is riding a bicycle, and its wheels have an angular velocity of 18.4 rad/s. Then, the brakes are applied and the bike is brought to a uniform stop, How much time does it take for the bike to come to rest
What is the total negative charge, in coulombs, of all the electrons in a small 1.05g sphere of carbon? One mole of C is 12.0g, and each atom contains 6 protons and 6 electrons.
A running house cat has 11.0 of kinetic energy at speed. What would her kinetic energy be if she ran half as fast as the speed
A 7.0-mm diameter hole is 1.0m m below the surface of a 2.0m diameter tank of water. What is the rate, in mm/min, at which the water level will initially drop if the water is not replenished
A parallel-plate capacitor in air has a plate separation of 1.49 cm and a plate area of 25.0 cm2. Determine the change in energy of the capacitor
A 10 kg picture is held in place by two wires, the first hanging at 35 degrees to left of vertical and second at 45 degrees to right of vertical
A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity, What is the maximum acceleration that the plane can have without the cup sliding backward on the table
A 1.55--tall fisherman stands at the edge of a lake, being watched by a suspicious trout who is 3.50 from the fisherman in the horizontal direction, At what angle from the vertical does the fish see the top of the fisherman's head
How much work is needed to push a 137- kg packing crate a distance of 2.65 m up an inclined plane that makes an angle of 27 o with the horizontal, when inclined plane is frictionless
The reflecting surfaces of two mirrors form a vertex with an angle of 125 degrees.If a ray of light strikes mirror 1 with an angle of incidence of 58 degrees, find the angle of reflection of the ray when it leaves mirror 2.
A teaspoon of organic oil dropped on the surface of a stillpond and spreads out to cover the area of almost an acre. what is the size of the single molecule
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