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A 14 N horizontal force pushes a block weighing 3.0 N against a vertical wall (see the figure). The coefficient of static friction between the wall and the block is 0.62, and the coefficient of kinetic friction is 0.45. Assume that the block is not moving initially. In unit-vector notation , what is the force on the block from the wall?
After staying on Penitgy for a few days, the landing craft returns to its mothership. At take-off, both engines are run at full thrust for 87 s. What height does the landing craft attain
Charge is scattered uniformly throughout a long cylindrical shell of inner radius R and out radius 2R. At what radius is the electric field equal to one-half the value on the outer surface.
question 1an infinitely long uniformly charged cylinder of radius r is shown.ausing symmetry arguments sketch the shape
The drawing shows two situations in which charges are placed on the x and y axes. find the magnitude of the net electric field at the origin
George, Romeo's not often heard about older brother, was also quite in love with Juliet. One night he tried to climb a 10 m long, find the coefficent of friction between the ladder and the grass
a stone is projected at a cliff of height h with an initial speed of 44.0 m/s directed at an angle ?0 = 51.0° above the horizontal. find the speed of the stone just before impact
A comet with a mass of 7.75 1011 kg strikes Earth at a speed of 26 km/s. Find the kinetic energy of the comet in joules
A football kicked off at an angle 20° from the ground reaches a maximum height of 4.7 m. What is the initial velocity of the kick
A baseball is thrown from the roof of 23.5 m-tall building with an initial velocity of magnitude 10.6 m/s and directed at an angle of 52.5 degrees above the horizontal. What is the speed of the ball just before it strikes the ground
One generator uses a magnetic field of 0.15 T and has a coil area per turn of 0.050 m2. What magnetic field should be used in the second generator, so that its peak emf is the same as that of the first generator
Two slits spaced 0.450 mm apart are placed 76.0 cm from a screen. What is the distance between the second and third dark lines of the interference pattern on the screen
An object with a mass of m = 4.6 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.265 m, determine the velocity when it hits the floor
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