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Calculate the uncertainty in the energy of the n=2 state of a hydrogen atom if the normal lifetime of the electron in this state is 1.3 x10-8 sec.
Convert the result to electron volt units:
Compare this energy uncertainty with the transition energy from n=2 to n=1 for hydrogen.
A point charge +q of mass m, (m,+q) is placed at point P along the x-axis where V_r(infinity) is known. Find the expression for the new velocity at the second point
An engineer is designing the runway for an airport. Of the planes that will use the airport, the lowest acceleration rate is likely to be 3 m/s2. The takeoff speed for this plane will be 65 m/s. Assuming this minimum acceleration, what is the minimum..
The magnetic field inside an air filled solenoid 36cm long and 2cm in diameter is 0.8T. Approximately how much energy is stored in this field
a mechanism on earth used to shoot down geosyn- chronous satellites that house laser-based weapons is finally perfected
The distance between the dipole and the point charge, by what factor would the force on the point charge due to the dipole change
A piece of sandston with a bulk volume of 1.3 cc is contained ina 5-cc cell filled with helium at 760 mm Hg. Temperature ismaintained constant and the cell is opened to another evacuatedcell the same volume.
An inside corner of a cube is lined with mirrors to make a corner reflector. A ray of light is reflected successively from each of the three mutually perpendicular mirrors. Show that its final direction is always eactly opposite to its initial dir..
A ball is thrown horizontally with a speed of 10.0 m/s, from the edge of the top of a building of height 19.6 m, and later strikes the (level) ground. How far from the base of the building did the ball strike the ground
Point charges q1 = -4.10 nC and q2 = -4.10 nC are separated by distance 3.00 mm, forming an electric dipole. What is the direction fo the dipole moment
A photon whose energy is 2.6 Ã- 10âˆ'14 J is scattered off an electron at an angle of 56â. What is the wavelength of the scattered wave
Two farmers are standing on opposite sides of a very large empty field that is 520.6 m across. What is the temperature of the air
A 0.39 m long and 0.39 m wide loop is moved at a constant velocity of 0.71 m/s into a perpendicular constant magnetic field of 0.51 T. Calculate the magnitude of the induced voltage in the loop.
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