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A hydrogen atom is in its third excited state (n = 4). Using the Bohr theory of the atom, calculate the following.(a) the radius of the orbitnm(b) the linear momentum of the electronkg · m/s(c) the angular momentum of the electronJ · s(d) the kinetic energyeV(e) the potential energyeV(f) the total energyeV
The middle C string on a piano is under a tension of 992 N. The period and wavelength of a wave on this string are 3.82 ms and 1.39 m
An old wooden tool is found to contain only 24% of 14 6C that a sample of fresh wood would. How old is the tool
A refrigerator shelf is an array of parallel wires with uniform spacing of 10.50 cm between centers. Find the number of diffracted beams leaving the other side of the shelf
The magnetic field B at the center of a circular coil of wire carrying a current I (as in fig. 20-9) is where N is the number of loops in the coild and r is its radius. estimate the magnetic field strength at the center of coil
Why is the human body not an equipotential surface? What is the function of a cell membrane in this respect and what electrical device does it behave like?
A 20-N horizontal force pushes an object along a rough floor so that the object moves with a constant velocity of 7.0 m/s
A cannon is rigidly attached to a carriage, which can move along horizontal rails, but is connected to a post by a large spring, Determine the maximum extension of the spring
Point charges located at 3, 8, and 11 cm along the x - axis are represented in the figure (at 3cm +q, 8cm -2q, 11cm +q). What is the magnitude of the force on the charge
q1. a football spends a total of 5 seconds in the air. it reaches a peak height of 30 meters. how long does it take to
With what initial speed should a positive charge, +q, be given such that if starting infinitely far away from a fixed positively charged nuclues, +Q, of radius R, the positive charge is just able to get to the surface of the positive charge, done wit..
Illustrate what is the minimum centripetal acceleration the truck must have going around the circular curve with radius 0.35 km so that it will clear the gully and land on the other side?
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 4.72 x 105 N. What is the work done on the jet by the catapult
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