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Charge is placed on two conducting spheres that are very far apart and connected by a long thin wire. The radius of the smaller sphere is 5 cm and that of the larger sphere is 12 cm. The electric field at the surface of the larger sphere is 930 kV/m. Find the surface charge density on each sphere.
An ideal massless spring is hanging vertically. When an unknown mass is attached to the spring, What is the frequency of the resulting oscillation
A 1200-kg car travels at a constant speed of 18.00 m/s around a circular track that is 80m across. What is the kinetic energy of the car?
A 12.7??C particle with a mass of 2.90×10?5kg moves perpendicular to a 1.01T magnetic field in a circular path of radius 23.0m, How fast is the particle moving
During an electrostatic field experiment, you assume that the electric field lines are in the plane of the paper, What condition determines the accuracy of this assumption
Calculate the mass flow rate (in grams per second) of blood (Ï = 1.0 g/cm3) in an aorta with a cross-sectional area of 2.0 cm2 if the flow speed is 47 cm/s
The amplitude of the electric field of an electromagnetic wave is 197 V/m.
You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the empire state building. Before the state legislature votes on funding for the project.
A particle with a mass of 0.420 kg is attached to a horizontal spring with a force constant of 34.02 N/m. At the moment t = 0, Find the length of a simple pendulum with the same period
A neon sign in a shop operates at around 12 kV (rms). A transformer is to step-up the 120 V (rms) line voltage to that value. How many turns must be placed into the primary coil
A satellite with a mass of 750 kg is in orbit around the earth. It is initially located at the altitude (measured from the earth's surface) of 2.12 x 106 m. It is then moved into a new orbit, with an altitude of 4.25 x 10^6 m (again, measured from..
In an amusement park ride called The Roundup, passengers stand inside a 16.0m -diameter rotating ring. how much force does the ring push on her at the top of the ride
On an essentially frictionless horizontal ice-skating rink, a skater moving at 3.1m/s encounters a rough patch that reduces her speed by 42% to a friction force that is 24% of her weight
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