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A 20.0 kg box slides down a 12.0 m long incline at an angle of 30.0 degrees with the horizontal. A force of 50.0 N is applied to the box to try to pull it up the incline. The applied force makes an angle of 10.00 degrees to the incline and above the incline. If the incline has a coefficient of kinetic friction of 0.100, then the increase in the kinetic energy of the box is: a)203 J b)275 J c)300 J d)392 J e)425 J
A wheel is freely rotating at 85.0 rev/min and has a mass of 27.5 Kg and a radius of .7 m. If the wheel can be stopped in 7 seconds by using a towel and exerting an inward force of 55.0 N, what is the coefficient of kinetic friction between the wheel..
A box is pushed a distance d along a ramp at a constant speed by a horizontal force, Fa. The mass of the box is m. The ramp is inclined at an angle of ? above the horizontal.
A train moving with constant velocity travels 180north in 12 and an undetermined distance to the west. The speed of the train is 36 M/S^2. Find the direction of the train's motion relative to north
A sample of 30 computer hardware companies were observed from Stock Investor Pro and is located in the INVESTOR tab in Excel file provided. The data includes price per share, book value per share, and the return on equity per share for each.
A 25 kg projectile is fired by accelerating it with anelectro magnetic rail on the earths surface. The rail makes a 30degree angle with the horizontal, and the guns applies a 1250 Nforce on the projectile for a distance of 7.50 m along the rail.
a cyclotron designed to accelerate protons has an outer radius of 0.290 m. the protons are emitted nearly at rest from
You are asked to hang a uniform beam and sign using a cable that has a breaking strength of 435 Newton. Find the minimum angle that you can have between the beam and cable
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.60 m/s at an angle of 18.0° below the horizontal. How far horizontally from the base of the building does the ball strike the ground
A guitar string is 108 cm long and has a mass of 3.4 g. From the bridge to the support post (L) is 70 cm, What is the frequency of the first overtone
Use a computer to produce a table and graph, like those in this section, for two interacting two-state paramagnets, each containing 100 elementary magnetic dipoles.
If the electron follows a circular path with a radius of 17cm , what is the magnitude of the magnetic field
A thin rod is initially positioned in the vertical direction, withits lower end attached to a frictionless axis that is mounted onthe floor. The rod has a length of 2.00 m and is allowed to fall,starting from rest.
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