What frictional force does the floor present to the crate
If you apply 20 N of force on a crate on a warehouse floor and the crate refuses to move, what frictional force does the floor present to the crate?
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A 55.0 kg pole vaulter running at 9.7 m/s vaults over the bar. If the vaulter's horizontal component of velocity over the bar is 1.0 m/s and air resistance is disregarded, how high was the jump?
A flywheel rotating at 640 rev/min is brought to rest with a uniform deceleration of 2.0 rad/s^2. How many revolutions does it make before coming to rest.
The value of the Coulomb constant is 8.98755 × 109 N · m2/C2 and the charge on an electron is 1.6 × 10-19 C What is the distance between the two spheres?
A helicopter is ascending vertically with a speed of 5.97 . At a height of 124 above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground?
y is the displacement of a string particle and x is the position of the particle on the string. The wave is traveling in the +x direction. What is the speed v of the wave?
Long, long ago, on a planet far, far away, a physics experiment was carried out. First, a 0.250- ball with zero net charge was dropped from rest at a height of 1.00 . The ball landed 0.400 later. Next, the ball was given a net charge of 7.75
The electric field at the point x = 5.00cm and y = 0 points in the positive x direction with a magnitude of 8.00 N/C. At the point x = 10cm and y = 0 the electric field points in the positive x direction with a magnitude of 16.0 N/C. Assume this
You (mass 80 kg) and your friend (mass unknown) are in a rowboat (mass 60 kg) on a calm lake. You are at the center of the boat rowing and she is at the back, 2 m from the center. You get tired and stop rowing. She offers to row and after the boat
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