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Rewrite equation (5.68) for the conductance of a barrier in three dimensions with the angle of the electrons (measured from z) as the variable of integration. Estimate the angular distribution of current for the previous example. Qualitatively, what effect would a large bias across the barrier have on this distribution?
Two very large charged parallel metal plates are 10.0 apart and produce a uniform electric field of 2.80×106 between them. How much work has the electric field done on this proton
A nickel crystal is used as a diffraction grating for x-rays. Then the same crystal is used to diffract electrons. what is the kinetic energy of each electron
A .1 kg meterstick is supported at its .4m mark by a stringattached to the ceiling. A .7 kg mass hangs vertically from the.05m mark. A mass is attached somewhere on the meterstick to keepit in both horizontal and rotational and translational equil..
When 4425 J of heat are added to a 0.16-m-long silver bar, What is the mass of the bar
A typical wall outlet is 120 volts in the U. S. Personal MP3 players require much smaller voltages, calculate the number of turns on the secondary coil of the adapter transformer
Two cylindrical glass beads each of mass m = 32 mg are set on their flat ends on a horizontal insulating surface separated by a distance d = 3 cm. The coefficient of static friction between the beads and the surface is μs = 0.3. The beads are the..
A source has a half-life of 12 hours and an initial activity of 10mCi. After 4 days what is its activity? Calculate the % of activity remaining in a source after 10 half lives.
What term is applied to a nuclear reaction if the products have less mass than the reactants? What term is applied to the difference in mass in such a case? Distinguish between natural sources of radiation and human made sources, and give examples..
A ball initially at rest rolls without slipping down an inclined plane while a block slides without friction down an identical plane. Which arrives at the bottom with more kinetic energy
A proton moving at 3.90 X 10^6 m/s through a magnetic field of magnitude 1.76 T experiences a magnetic force of magnitude 8.40 X 10^-13 N. What is the angle between the proton's velocity and the field
A solid object of density 660 kg/m3 is placed in water. What will be the buoyant force on the object
Consider 1 cubic meter of dry at the surface with a temperature of 300 K and a pressure of 1000 mb. Problem 19) How much energy must be added to this cubic meter of air in order to double its volume? What is the final temperature?
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