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A rope is pulling a 25.5 kg mass along a horizontal surface. The kinetic coefficient of friction between the mass and the surface is 0.222. Find the tension in the rope required to accelerate the mass from 2.44 m/s to 8.33 m/s in 6.22 seconds.
A compact disk on a CD player rotates clockwise. The disk completes one revolution in 0.260 s. Find the angular velocity of the disk
A cannonball is shot (from ground level) with an initial horizontal velocity of 37.0 m/s, What is the speed of the cannonball 3.5 seconds after it was shot
Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands is 2.2 cm in diameter, calculate the potential difference between its feet
illustrate what is the new horizontal distance L between the base of the slide and the splashdown point of the person?
A beam of X-rays having a wavelength of .09nm impinges on an unknown crystal. What is the spacing between the atomic plates
A scaffold of mass 60 kg and length 6.5 m is supported in a horizontal position by a vertical cable at each end. What is the tension in the cable closer to the painter
Suppose the rotational kinetic energy of a solid disc is 1000 J when the disk has an angular velocity of 3 rad/s. What is the disk's moment of inertia
A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 671 m/s. The gun is pointed directly at the center of the bull's-eye, but the bullet strikes the target 0.029 m below the center. What is the horizontal distance betwee..
A fun-loving 11.4 {rm kg} otter slides up a hill and then back down to the same place. If she starts up at 5.75 {rm m/s} and returns at 3.75 {rm m/s}, how much mechanical energy did she lose on the hill.
You are driving to grocery store at 15 m/s .You is 140 m from an intersection when the traffic light turns red. Suppose that your reaction time is 0.70 s. and that your car brakes with constant acceleration. How far are you from the intersection whil..
Suppose a cube of aluminum which is 1.00 cm on a side accumulates a net charge of +2.30 pC. By what percentage has the mass of the cube decreased
The ground state for a single valence electron of a rubidium atom (Z=37) is 5s and its energy is –4.18 eV. The valence electron is excited into the 5g state. We want to determine the energy of this 5g electron. Assume that the wave function for th..
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