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A spherical shell of radius 15cm carries 4.8uC , distributed uniformly over its surface. At the center of the shell is a point charge.
(A) If the electric field at the surface of the sphere is 750kN/c and points outward, what is the charge of the point charge?
(B) What is the field just inside the shell?
A projectile is shot with initial velocity 20.0 m/s at launch angle ? = 60.0? up from horizontal. How far from the gun does the other fragment land
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When the projectile is at the top of its trajectory, an internal explosion causes it to separate into two fragments of equal mass. One of the fragments falls straight downward as though it had been free from rest.
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An elevator is moving upward at a constant speed of 2.50 m/s. A bolt in the elevator ceiling 3.00 mabove the elevator floor works loose and falls. How long does it take for the bolt to fall to the elevator floor
A 70.0-g object connected to a spring with a force constant of 25.0 N/m oscillates with an amplitude of 6.00 cm on a frictionless, horizontal surface. Find the total energy of the system
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