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A Hydrogen atom has one proton in the nucleus and one electron in the shell. In a classic model of the atom, in a certain state, this electron is in a circular orbit around the nucleus with an velocity of 545364.928909953 m/s.
What is the radius of the orbit?
What is the angular momentum, L, of the electron at this radius?
What is the quantum value, n, of the electron at this radius?
The Sun revolves around the center of the Milky Way Galaxy at a distance of about 30,000 light-years from the center, how many stars would there be in our Galaxy
A force of F=9.0i+8.0jN is applied to an object about a fixed axis aligned with the z direction. If the force applied at the point (6.00 m, 9.00 m), illustrate what is the magnitude and direction of the torque?
A 0.200 T magnetic field is directed along the positive x axis. A magnetic field of unknown magnitude acts along the positive y axis, Find the magnitude of the unknown magnetic field
A constant horizontal force Fa pushes a 2 kg FedEx package across a frictionless floor on which an xy coordinate system has been drawn. It gives package's x and y velocity components versus time t. What is the magnitude of Fa.
A ray of sunlight hits a frozen lake at a 43.9° angle of incidence. At what angle of refraction does the ray penetrate the ice
An electric motor with a 2.7-hp output drives a machine with an efficiency of 35%. What is the energy output of the machine per second
What was the absorbed dose in the carbon walls? The average mass stopping powers of graphite and CO2 for the photons are, respectively, 1.648 and 1.680 MeV cm^2/g.
A 4.40 kg ball is dropped from a height of 14.0m above one end of a uniform bar that pivots at its center. The bar has mass 7.50kg, How high will the other ball go after collision
A space probe is traveling in outer space with a momentum that has a magnitude of 4.94 x 107 kg·m/s. Determine the momentum of the probe after the retrorocket ceases to fire
As you think about it, you're not sure he threw the ball exactly horizontally, What is the range of speeds with which the ball might have left his hand, Enter the minimum and the maximum speed of the ball
Three point charges, A = 1.80 µC, B = 7.50 µC, and C = -3.80 µC, are located at the corners of an equilateral triangle, Find the magnitude (N/C) at point A, and the direction in degrees counterclockwise from the positive x-axis
A horse canters away from its trainer in a straight line, moving 150m away in 14 sec. It then turns abruptly and gallops halfway back in 4.5 sec.
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