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A proton is moving in a circular orbit in a uniform magnetic field perpendicular to the orbit plane. The speed of the proton is 1.2 x 107 m/s, and the strength of the magnetic field is 0.12 T.
Find
a) the magnetic force on the proton;
b) the radius of the circular orbit and the period of the circular motion. (The proton mass is 1.67 x 10^-27 kg).
Two 480 V (rms) loads are connected in parallel. The two loads draw a total average power of 40,800 W at a power factor of 0.8 lagging. What is the power factor of the other load
The width of the ribbon normal to a radius vector originationg at the star's center is much greater than the thickness of the ribbon in the radial direction.
An 80kg painter climbs a 2.45m ladder that is at an angle of 25 degrees with a vertical wall. what is the work done by gravity as the painter climbs the ladder
A mass m1 is hanging from a light cord which is strung over a pulley of moment of inertia I and radius R0, What are the tensions in each part of the light cord
An elevator has mass 550kg , not including passengers. The elevator is designed to ascend, at constant speed, What is the maximum number of passengers that can ride in the elevator
In 1967, New Zealander Burt Munro set the world record for an Indian motorcycle, on the Bonneville Salt Flats in Utah, of 183.58 mi/h. how long did it take Burt to complete the course
A block of mass m=1.40kg slides along a horizontal table with speed Vo=2.50m/s. How far did the spring compress when the block first momentarily come to rest
Photorefractive keratectomy (PRK) is a laser-based surgery process that corrects near- and farsightedness by removing part of the lens of the eye to change its curvature and hence focal length. What is the energy of a single photon
A simple pendulum makes 143 complete oscillations in 2.80 min at a location where g = 9.80 m/s2. Find the period of the pendulum
Two point charges of equal mass start from rest. What is the distance between the charges and How long will it take the charges to move
Bacteria vary somewhat in size, but a diameter of 2.0 nanometers is not unusual. What would be (a) volume (in cubic centimeters) and (b) surface area (in square millimeters) of such a bacterium, assuming that it is spherical.
A certain automobile can decelerate at |a1| = 1.6 m/s2. Traveling at a constant v1 = 29 m/s, this car comes up behind a car traveling at a constant v2 = 4 m/s. What is the speed of the faster car relative to the slower car
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