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A 600-turn solenoid is 21cm long and 1.7cm in diameter and carries 67 mA. How much magnetic energy does it contain?
Moving a charge from point A, where the potential is 310 , to point B, where the potential is 120 , takes 4.5×10?4 of work. What is the value of the charge
In a railroad switchyard, a 50 ton freight car is sent at 7.4 mi/h toward a 27 ton car that is moving in the same direction at 2.0 mi/h. What is the speed of the pair after they couple together
Light in vacuum is incident on the surface of a slab of transparent material. What is the index of refraction of the transparent material
If a particle of mass 4.9 kg is moving east at 10 m/s and a particle of mass 19 kg is moving west at 10 m/s, what is the velocity of the center of mass of the pair
A 0.1kg ball is attached to a string and whirled around in a circle overhead, What is the maximum speed the ball can have when the radius of corcle is 1m
Suppose that the current is used up as it moves through a resistor. The potential difference across the resistor is kept the same and V/I = R. how can the resistance of the resistor be constant
A jet plane at take-off can produce sound of intensity 9.90 W/m^2 at 30.3 m away. What power of sound does the jet produce at take-off
A 115 mCi radioactive tracer is made in a reactor. When delivered to a hospital 16 hours later its activity is 95 mCi. For how long (in hours) is the sample usable
A 900- kg car collides with a 1300- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial speed of the lighter car (in km/h)
An electric dipole has opposite charges of 6.35*10^-15 C seperated by a distance of 0.29mm, Determine magnitude of the torque exerted on the dipole by the electric field.
A 62.35-kg person runs and jumps off a 2.46 m cliff at a velocity of 4.75 m/s into water. What is the total work (net work) of the jumper when he hits the surface of the water
The block in the figure below has a mass of 5.7 kg and it rests on an incline of angle %u03B8. determine the angle of the incline
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