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An electron is shot into one end of a solenoid. As it enters the uniform magnetic field within the solenoid, its speed is 790 m/s and its velocity vector makes an angle of 30 degree with the central axis of the solenoid. The solenoid carries 4.2 Amp and has 8000 turns along its length. Find how many revolutions does the electron make along its helical path within the solenoid by the time it emerges from the solenoid's opposite end? (In a real solenoid, where the field is not uniform at the two ends, the number of revolutions would be slightly less than the answer here.) rev
You observe that the hammer hangs at rest with respect to the bus when the angle between the rope and the ceiling of the bus is 79. Illustrate what is the acceleration of the bus?
An organ pipe is 1.17 m long. The temperature of the air is 20 degree C. What is the fundamental harmonic frequency of this pipe when it is closed at one end
A centrifuge is rotating at 10,000 revolutions/minute. It is brought to rest in 4.00 seconds under a constant acceleration. Determine the initial angular velocity of the centrifuge in rad/sec
An astronaut weighs 152 N on the surface of the moon. If the same astronaut orbits the moon at an altitude equal to the moons radius, what gravitational force does the moon exert on him at this altitude?
A resonant circuit using a 240 μF capacitor is to resonate at 15.5 kHz. How many loops will the inductor contain
one day george was experimenting with friction and attempting to pull al across the surface of a floor. george applies
A positive point charge is at the centre (sorry! I'm in Canada!) of a cube. How do I determine the flux through each face of the cube and the total flux?
A race car starts from rest and drives as fast as possible over the"L" shaped course on the board. X=120m, R=35m. the car canaccelerate at a 9.0 m/s^2 under any condition (speeding up, slowingdown or turning). how long will it take to run the cour..
During a particular thunderstorm, the electric potential between acloud and the ground is Vcloud -Vground = 2.2 x 108 V, with thecloud being at the higher potential. What is the change in anelectron's potential energy when the electron moves from th..
a pion has a rest energy of 135mev. it decays into two gamma rays bursts of electromagnetic radiation that travel at
a charged material causes the deflection of a positively charged electroscope to increase. does the charged material
A block of weight 3.9N is launched up a 30%u2218inclined plane 2.35m long by a spring with k = 2.35 N/m and maximum compression 0.10m. How much kinetic energy does it have there
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