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Planar motion:An electron enters a magnetic field of 0.7 T, moving perpendicular to it with a speed of 5·105 m/s.
a.) Find the radius of the orbit it will make.
Helical motion:
If an electron were sent at the same speed, but at an angle of 70o to the magnetic field:
c.) What would be the radius of the helical motion?d.) How long would it take for the electron to travel 3 m along ("downstream" to) the magnetic field?
e.) The "pitch" of a helix is the forward distance it travels during one complete turn of the helix. What is the pitch of this helix?
A certain dog whistle operates at 23.0 kHz while another (brand X) operates at an unknown frequency. estimate the operating frequency of brand X
The two blocks, m1 = 1.40 kg and m2 = 5, are connected by a mass less rope that passes over a pulley. The pulley is 12 cm in diameter and has a mass of 2.0 kg.
A newly discovered planet has a mass of 7.88 x1026 kg, and has a satellite whose mass is 6.44 x 1011 kg. what is the gravitational attraction between them
An X-ray photon with a wavelength of 0.260nmscatters from a free electron at rest. Find the final momentum of the photon
A constant force of 46.3 N, directed at 28.7o from horizontal, pulls a mass of 14.7 kg horizontally a distance of 3.09 m
A frictionless pulley has the shape of a uniform solid disk of mass 2.80kg and radius 10 cm. What percent of the total kinetic energy does the pulley have
The speed of a projectile when it reaches its maximum height is 0.38 times its speed when it is at half its maximum height
Compressed air can be pumped underground into huge caverns as a form of energy storage. how many homes could this internal energy serve for one day
A child in a boat throws a 5.600 kg package out horizontally with a speed of 11.00 m/s. Determine the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 23.00 kg and that of the boat is 45.00 kg.
What is Seth’s angular position at = 3.2 measured counterclockwise from the top? Give your answer as an angle in degrees between 0 and 360 degrees.
In fact, it is found that if the heavier mass is given a downward speed of 0.21 m/s, it comes to rest in 6.7 s. What is the average frictional torque acting on the pulley
Infrared light of wavelength 1.17 um illuminates a 0.34-mm-diameter hole. What is the angle of the first dark fringe in degrees
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