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Vector A has components of +3 in the x-direction and -4 in the y-direction. Vector B has components -2 in the x-direction and +3 in the z-direction. Calculate the cross product of Vector A and Vector B.
A plate carries a charge of -3.9 µC, while a rod carries a charge of +2.2 µC. How many electrons should be transferred from the plate to the rod, so that both objects have the same charge.
A high diver of mass 65kg jumps off a board 10m above the water. If her downward motion is stopped 1.70 s after she enters the water, what average force did the water exert on her.
The Moon moves noticeably on the celestial sphere over the space of a single night. To show this, calculate how long it takes the Moon to move through an angle equal to its own angular diameter (0.5 degrees) against the background of the stars. Gi..
Find out kinetic energy of the merry-go-round
The potter can stop the wheel in 7.0 s by pressing a wet rag against the rim and exerting a radially inward force of 68 N. Find out the effective coefficient of kinetic friction between the wheel and the wet rag.
A mass of 50 kg hangs from a cable that, in turn, is tied to two other cables, What are the tensions in the two upper cables, TL and TR
Suppose the projectile is traveling 85.0 m/s at its maximum height of y = 272 m. Explain how much work has been done on the projectile by air friction?
A spring with a spring constant 15.0 N/m hangs from the ceiling. A 300g ball is attached to the spring and allowed to come to rest, What is the amplitude f oscillations after 2.0 minutes
A solid cylinder of mass 3 kg and radius 0.2 m starts from rest at the top of a ramp, inclined 15°, and rolls to the bottom without slipping. (For a cylinder I = 0.5MR2) The upper end of the ramp is 1.2 m higher than lower end. Find the linear sp..
A rescue plane flies horizontally at a constant speed searching for a disabled boat, If it takes the sound 2.10 s to reach the plane, determine the speed of the plane and What is its altitude
How the system comes to thermal equilibrium
A 43.0-N child is in a swing that is attached to ropes 1.60 m long. Find the gravitational potential energy associated with the child relative to her lowest position at the following times.
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