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The electrons in a beam are moving at 2.6 ×108 m/s in an electric field of 16000 N/C. What value must the magnetic field have if the electrons pass through the crossed fields undeflected?
in the electron gun pictured a potential difference of 12.0 kv is found to bring electrons from rest at the cathode to
find the coefficient of kinetic friction between skis and snow.Three equal point charges, each with charge 1.80 mu C, are placed at the vertices of an equilateral triangle whose sides are of length 0.500 m. What is the electric potential energy U o..
A 3.80-g bullet moves with a speed of 180m/s perpendicular to the earth's magnetic flied of 5.00X10^-5T. If the bullet possesses a net charge of 8.0X10^-9C by what distance will it be deflected from it's path due to it's magnetic field after it has t..
A grasshopper makes four jumps. The displacement vectors are (1) 25 cm, due west; (2) 23.5 cm, 50° south of west; (3) 24.5 cm, 56° south of east; and (4) 36 cm, 43° north of east. Find the magnitude and direction of the resultant displacement. Expres..
A generator is manufactured to produce a maximum EMF of 200v while rotating with an angular speed of 1000rpm. What is the voltage induced within the coil inside the transformer due to the coil in the generator
You throw a ball from the top of a 50 m high building at 12 m/s upward. The ball misses the building on the way down. The mass of the ball is 2 kg. What is the total work done by the force of gravity on the ball
A golf ball strikes a hard, smooth floor at an angle of θ = 31.6°, rebounds at the same angle. The mass of the ball is 0.043 kg, and its speed is 45m/s just before and after striking the floor. What is the magnitude of impulse applied to the golf bal..
A rectangular coil of wire with 25 loops carries a current of 24.2 mA. The coil's dimensions are 8.5 cm by 2.3 cm. What is the magnetic moment of the coil
It was once recorded that a Jaguar left skid marks that were 290 m in length. Assuming that the Jaguar skidded to a stop with a constant acceleration of -3.90 m/s2, determine the speed of the Jaguar before it began to skid.
A playground is on the flat roof of a city school, 6.1 m above the street below (see figure). The vertical wall of the building is h = 7.60 m high, Find the speed at which the ball was launched
The magnetic coils of a tokamak fusion reactor are in the shape of a toroid having an inner radius of 0.7 m and an outer radius of 1.3m. Find the magnitude of the magnetic field inside the toroid
What is the buoyant force on a helium balloon in air if the balloon is spherical with diameter 28.5cm
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