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You kick a rock off a cliff which is 22.22 m high, with a horizontal velocity of 13.90 m/s and an initial vertical velocity of 2.10 m/s downward. What is the magnitude of the rock's total velocity when it hits the ground below?
q1. a certain kind of glass has an index of refraction of 1.660 for blue light of wavelength 420 nm and an index of
Furthermore, describe any differences in kinetic energy and gravitation potential energy among these balls while they hit the ground.
Light with ? = 760 nm is diffracted by a single slit, and the first intensity minimum (the first dark fringe) occurs at ? =3°. What is the width of the slit
A 2.00-m tall basketball player is standing on the floor 10.0 m from the basket. If he shoots the ball at a 40 degree angle from the horizontal, at what initial speed must he throw the ball so that it goes through the basket without striking the b..
A potter's wheel having a radius 0.450m and a moment of inertia 15 kg•m2 is rotating freely at 45 rev/min. The potter can stop the wheel in 7.50 s by pressing a wet rag against the rim and exerting a radically inward force of 68 N.
q1. two crates of mass 57 and 164 are in contact and at rest on a horizontal surface. a 650 force is exerted on the
what is the magnitude of the charge on each sphere. A car crashes into a wall at 45 m/s and is brought to rest in 0.1 s. compute the average force exerted on a 80 kg test dummy by the seat belt.
A small 4.50 brick is released from rest 3.00 above a horizontal seesaw on a fulcrum at its center, Find the angular momentum of this brick about a horizontal axis through the fulcrum
A 45.0 g ball of copper has a net charge of 1.75 µC. What fraction of the copper's electrons have been removed
A small sphere whose mass is 7.00E-03 g. carries a charge of 2.00E-08 C. Calculate the surface charge density (in coulombs/meter^2) for the sheet
Suppose that a person pushes a box with a constant force of 100 N over a distance of 25 meters. What is the change in kinetic energy
A thin sheet of transparent material is surrounded by air. The sheet has an index of refraction of 1.47, Calculate the wavelength of the light in the material
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