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An object is dropped from rest from a height of 4.36E+6 m above the surface of the earth. If there is no air resistance, what is its speed when it strikes the earth?
A concave mirror has a focal length of 20 cm. What is the position (in cm) of the resulting image
a girl uses a jump rope made of flexible wire. she holds the ends of the rope in extended hands, What is the amplitude of oscillation of this alternating emf
A student doing an experiment pours 0.160kg of heated copper shot into a 0.355-kg aluminum calorimeter cup containing 0.240kg of water. find the initial temperature of the shot
Halley's comet, which passes around the Sun every 76 years, hasan elliptical orbit. When closest to the Sun (perihelion) it is ata distance of 8.823 x 1010 m, Calculate its speed at aphelion
A red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an x axis. What is the initial velocity of the green car
What are the total displacement and angle of displacement
q1. a certain car battery with a 14.0 v emf has an initial charge of 195 abullh. assuming that the potential across the
A 21.3 kg object is pushed down a 26.3 cm long inclined plane that makes an angle of 15.7 degrees with the horizontal at a constant velocity. If the coefficient of kinetic friction is 0.35, then what is the work done by friction on the object? Assume..
A thin spherical shell has a radius of 2.8 m and a mass of 270 kg, and its center is located at the origin of a coordinate system. Another spherical shell with a radius of 1 m and mass 100 kg is inside the larger shell with its center at 0.6 m on the..
A 3-kg block is pulled along a FRICTIONLESS surface with a force of 42N. What is the force exerted on the 2-kg block by the 1-kg block
Then find the force between them as a function of distance h. describe why the sign of the force does (or does not) make sense to you.
A plate of glass with parallel faces having a refractive index of 1.46 is resting on the surface of water in a tank. What angle does the ray refracted into the water make with the normal to the surface? Use 1.33 for the index of refraction of water
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