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The electric field E at distance r from the center of a uniformly charged sphere of radius R and total charge Q is E= Qr/4ΠεoR^3 when r<R. Such sphere corresponds to the Thomson model of the atom. Show that an electron placed in the center of the sphere will executes simple harmonic motion if it is displaced from the center.
a. Derive the frequency of this motion.
b. Assuming that the spectrum of Hydrogen is produced by the oscillating electron moving in simple harmonic motion, Compare the formula derive in part(a) with the actual hydrogen spectrum.
Neutron stars are so named because they are composed of neutrons and have a density the same as that of a nucleus. find the radius of a neutron star
A 2.94g aluminum bullet at 31.0°C is fired at a speed of 236 m/s into a large block of ice at 0°C, in which it embeds itself. What quantity of ice melts
Two cars emerge side by side from a tunnel. Car C is traveling with a speed of 60 km/h and has an acceleration of 40 km/h/min. Find which car is passing the other as they come out of the tunnel
A hydrogen discharge lamp emits light with two prominent wavelengths: 486 nm (blue) and 656 nm (red). The light enters a flint-glass prism perpendicular to one face and then refracts during the hypotenuse back into the air. The angle among these two ..
The skier starts at a snow covered slope which is inclined 20 degrees above the horizontal. The skier has a mass of 100kg. How fast are is he going at the bottom
A cross-country skier slides horizontally along the snow and comes to rest after sliding a distance of 28 m. determine her speed at the start of the slide
an athlete executing a long jump leaves the ground at a 30.9o angle and travels a horizontal distance 7.03m. what was
An induction cooktop generates an alternating magnetic field B(t)=(0.25 T)cos??t. Calculate the maximum emf induced in a pan modeled as a ring of radius 10 cm
After going through a bad break-up with your significant other you end up drinking half a case of beer. The next day you decide the cloud of despair must be fought with exercise. How much longer will it take you to burn off the calories of the bee..
Waves moving on a lake have a speed of 2.3 m/s and a distance of 1.8 m between adjacent crests. Find the period of the wave motion
q1. gamma-ray busters are objects in the universe that emit pulses of gamma rays with high energies. the frequency of
A 125 gram mass us attached to the end of an unstressed vertical spring (of constant 49.4 N/m) and then dropped. Find what is its maximum speed
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