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A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a force of 144 N at an angle of 29.0° above the horizontal. The box has a mass of 23.0 kg, and the coefficient of kinetic friction between box and floor is 0.300.
(a) Find the acceleration of the box.
(b) The student now starts moving the box up a 10.0° incline, keeping her 144 N force directed at 29.0° above the line of the incline. If the coefficient of friction is unchanged, what is the new acceleration of the box?
A pressurized cylindrical tank, 5.0 in diameter, contains water which emerges from the pipe at point C, with a velocity of 12 . Point A is 10 above point B and point C is 3 above point B. The area of the pipe at point B is 9×10?2 and the pipe narr..
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A simple harmonic oscillator consists of a block of mass 4.10 kg attached to a spring of spring constant 195 N/m. When t = 2.00 s, the position and velocity of the block are x = +0.129 m and v = +3.415 m/s. (a) What is the amplitude of the oscilla..
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