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A long circular pipe with outside radius R = 3.00 cm carries a (uniformly distributed) current i = 13.8 mA into the page. A wire runs parallel to the pipe at a distance of 3.00R from center to center. Find the magnitude of the current in the wire in milliamperes such that the ratio of the magnitude of the net magnetic field at point P to the magnitude of the net magnetic field at the center of the pipe is 3.11, but it has the opposite direction.
An elevator ascends with an upward acceleration of a. At the instant its upward speed is v, find the time of flight of the bolt from ceiling to floor
An airplane is flying with a speed of 305 km/h at a height of 3750 m above the ground. How much energy was dissipated on the parachute by the air friction
A curve of radius 152 m is banked at an angle of 11°. An 722-kg car negotiates the curve at 86 km/h without skidding. avoid the effects of air drag and rolling friction.
The surface charge density on an infinite sheet is -2.0 x 10-6 coulomb. How far does the particle travel before reaching its turning point
The electric potential on the surface of a conductor (in static equilibrium) is 5V. find electric potential in the interior of the conductor
A loudspeaker of mass 18.00 kg is suspended a distance of h= 1.60.below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of t= 3.90 m. What is the tension in each of the cables? Use 9.80 for the magnitude ..
A fuel pump sends gasoline from a car's fuel tank to the engine at a rate of 5.49 10-2 kg/s. What is the speed at which the gasoline moves through the fuel line
A 60 kg crate is lowered using arope over a fixed support. The rope exerts a constant upward forceof 500 N.? How fast is the crate traveling when it hits the floor
A camera with a telephoto lens of focal length 125 nm is used to take a photograph of a plant 1.8 m tall. The plant is 5.0 m from the lens. How tall is the image
A charge of -250e is uniformly spread through the volume of a sphere of radius 2.00 cm. What is the volume charge density in that sphere
a tennis player receieves a srve with the ball travelling horizontally towards him at 50 m/s: what was the change in momentum of the ball
A 20 kg child is riding a 5.4 kg bike with a velocity of 5.4 m/s to the northwest. a)What is the total momentum of the child and the bike together? Answer in units of kg · m/s b) What is the momentum of the child?
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