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Each of two small non-conducting spheres is charged positively, the combined charge being 40 mC. When the two spheres are 50 cm apart, each sphere is repelled from the other by a force of magnitude 2.0 N. Determine the magnitude of the smaller of the two charges.
A charged capacitor is connected to an inductor. At time t=0 the charge on the capacitor is Q= 6uC. What is the amplitude of the current at that same instant
A 46.0-kg girl is standing on a 159-kg plank. Both originally at rest on a frozen lake that constitutes a frictionless, What is the velocity of the plank relative to the ice surface
A top spins at 28 rev/s about an axis that makes an angle of 33° with the vertical. The mass of the top is 0.44 kg, What is the precession rate
A person of mass 75 stands at the center of a rotating merry-go-round platform of radius 2.8 and moment of inertia 920. The platform rotates without friction with angular velocity 1.78. The person walks radially to the edge of the platform. Compute a..
You wish to observe the progress of your vacuum pump in evacuating a tall bell jar for the purpose of demonstrating that sound waves do not travel in a vacuum
A frictionless pulley has the shape of a uniform solid disk of mass 6 and radius 25 . A 1.90 stone is attached to a very light wire that is wrapped around the rim of the pulley.
The motion of a 25.0 kg mass on the end of a string is uniform circular motion. The magnitude of the tangential velocity of the mass is 5.0 m/s, Calculate the angular momentum of the mass
The three charged particles in the figure below are at the vertices of an isosceles triangle (where d = 1.60 cm). Taking q = 8.20 µC, calculate the electric potential at point A
A dart is thrown horizontally with an initial speed of 16 m/s toward point P, the bull's-eye on a dart board. It hits at point Q on the rim, How far away from the dart board is the dart released
A straight, nonconducting plastic wire 8.50 cm long carries a charge density of +175 nC/m distributed uniformly along its length, Find the magnitude and direction of the electric field
At what angle have to the laser beam in the diagram be aimed at mirrored ceiling in order to hit the midpoint of the far wall? The length of the room is a=4.9 m and its height is b=3.00 m.
The internal energy of a gas is 1000j. The gas is compressed adiabatically and it's volume deceases by 400cm^3. What is internal energy of gas
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