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A child sits on the outer edge of a 18 m radius merry-go-round. If the parent applies a tangential acceleration of 2.5 m/s2, how long will it take the child to achieve a velocity of 8.3 rad/s?
An interferometer is set up to carefully measure changes in length. The laser source has a wavelenth of 632nm and the arms of the device are 11 m long
A patient in therapy has a forearm that weighs 20.5N and lifts a 112.0N. The only other significant force on his forearm come from the biceps muscles (which acts perpendicularly to the forearm) and the forces at the elbow. If the biceps produce a ..
Angel Falls in southeastern Venezuela is the highest uninterrupted waterfall in the world, dropping 979 m (3212 ft). Assume that it takes 14 s for the water to fall from the lip of the falls to the river below. If the water lands 55 m from the bas..
A 1000 kg car is pushed up a 17.5 degree incline, for a distance of300 m at a constant speed. assume the applied force is directedparallel to the plane. how much work does this force do if the plane is frictionless? has a coeffiecient of friction ..
A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. What is the final angular velocity of the top
Skateboard with a mass of 3kg is moving at a speed of 5 m/s on a level surface. It encounters a hill and rolls up until it stops. To what vertical height does it rise
In a certain particle accelerator, a current of .5mA is caried by a 5-MeV proton beam that has a radius of 1.5 mm. Find the power consumption of the accelerator
a 195-watt light bulb uses an average power of 195 w when connected to an rms voltage of 120 v.a what is the resistance
Given series of equipotentials Allow a charge to move through three displacements s ,s1,s2 . Calculate the electric field component along each displacement
A 3.6- cm-radius ball rolls down an inclined plane from rest at the top. The angular acceleration of the rolling ball about its center is 150 rad/s2, How long is the plane
A point charge Q = 8.50×10-6 C is at the center of a conducting spherical shell of radius R = 17.90 cm. What is the field just outside the shell
A friction-less test track is banked so that cars can move around the track at 37 m/s without slipping up or down the track. find the bank angle
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