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A tall student and a short student are carrying a 70lb load between them. The tall student holds the load at an angle of 45o with the verticle while the short student holds the load at a 30o angle. What force does each exert?
The Burj Khalifa in Dubai is the world\'s tallest building. The structure is 828 m (2,716.5 feet) and has more than 160 stories. how high is the hotel room from the ground
A small object is attached to a horizontal spring and set in simple harmonic motion with amplitude A and period T. How long does it take for the object to travel a total distance of 6A?
Packages in an automobile parts supply house are transported to the loading dock by pushing them along a roller track with very little friction. At the instant shown packages B and C are at rest and package A has a velocity of 6 ft/s. Knowing that..
A 1.0-kg ball has a velocity of 12 m/s downward just before it strikes the ground and bounces up with a velocity of 12 m/s upward. What is the change in momentum of the ball
a particle has a de broglie wavelength of 2.7x10-10 m.then its kinetic energy doubles.what is the particles new de
A 22 {\rm kg} sphere is at the origin and a 12 {\rm kg} sphere is at (x, y) = ( 22 {\rm cm} , 0 {\rm cm}) At what point or points could you place a small mass such that the net gravitational force on it due to the spheres is zero?
When a parachute opens, the air exerts a large drag force on it.This upward force is initially greater than the weight of the skydiver and, thus, slows him down. Suppose the weight of the skydiver is 902 N and the drag force has amagnitude of 1030..
Objects with masses of 110 kilogram and a 410 kilogram are separated by 0.390 meter. Obtain the net gravitational force exerted by these objects on a 38.0 kg object placed midway between them
A gas expands from 0.20m3 to 0.30m3 at a constant pressure of 1.01x105 Pa. During this process 12,100 J of heat flow into the gas. What is the change in internal energy of the gas
Automobile Airbags. The human body can survive an acceleration trauma incident (sudden stop) if the magnitude of acceleration is less than 250m/s2.
The launching mechanism of a toy gun consists of a spring ofunknown spring constant. determine the speed of the projectile as it moves through the equilibrium position ofthe spring
Two thin, isolated, concentric conducting spheres of radii 5.10 cm and 14.40 cm, have net charges of 23.00 nC, What is the electric potential at 3.315 cm from the center of the spheres
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