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A railroad car of mass 2.44 104 kg, is moving with a speed of 3.96 m/s. It collides and couples with three other coupled railroad cars, each of the same mass as the single car and moving in the same direction with an initial speed of 1.98 m/s.
(a) What is the speed of the four cars after the collision?
(b) How much energy is transformed into heat, light and sound in the collision?
Evaluate (a) the acceleration of each object, (b) the tension in the string, and (c) the coefficient of kinetic friction between m2 and the incline.
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Light of wavelength 500 nm illuminates a round 0.50-mm-diameter hole. find the width of the central bright circle on the screen
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Find out an effective coefficient of kinetic friction
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Calculate the y-component of the magnetic force.
An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the minimum initial speed necessary to meet the path of the arrow. Elucidate the initial speed of the apple?
A proton is initially at rest at a point where the potential is 459 V. Sometime later the proton is at a point where the potential is 218 V. If no force other than an electrostatic force acts on the proton, what is its final kinetic energy.
blocks are lined up in a row on a frictionless table. How much force does the 8.0 block exert on the 7 block.
air is contained in a piston/cylinder at 350K, 300kPa and occupies 0.1m^3. determine the change of availability of the system
Jane plans to fly from Binghampton, New York, to Springfield, Massachusetts, about 280 km due east of Binghampton, What was the wind velocity
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