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1. Ultraviolet light of wavelength 280 nm is used in an experiment on photoelectric effect with lithium (c = 2.5 eV) cathode. Find (a) the maximum kinetic energy of the photoelectrons and (b) the stopping potential.
2. Consider an X-ray beam, with λ = 1.00 A° and also a y-ray beam from a Cs sample, with λ = 1.88 x 10-2 A°. If the radiation scattered from free electrons is viewed at 90° to the incident beam:
(a) what is the Compton wavelength shift in each case?
(b) What kinetic energy is given to recoiling electron in each case?
(c) What percentage of the incident photon energy is lost in the collision in each case?
3. Find the amplitude A in the wave function for the infinite potential well. Determine the probability of finding a particle of mass m between x = 0 and x = a/10 if it is in the n = 4 state.
4. Use a computer program or Mathematica to calculate values En, Ψn Ψn2 for an electron in an infinite potential well with a = 10 A° and a = 20 A°. Plot separately, to scale Ψn Ψn2 for n=1 to 6.
Two, concentric, thin spherical shells of radii R1 = 31.3 cm and R2 = 39.1 cm are uniformly charged with a total charge Q1 = -56.5 ?C, What is the potential of the outer shell
Two particles with masses 2m and 6m are moving toward each other along the x axis with the same initial speeds vi. Find the final speeds of the particles
A proton accelerates from rest through 1500 volts. the proton then enters a region of space where the magnetic field is 0.3 tesla (and this field is perpendicular to the velocity). calculate the radius of the resulting circular motion?
Objects with masses of 180 kg and a 480 kg are separated by 0.410 m. Find the net gravitational force exerted by these objects on a 58.0-kg object placed midway between them
A small block of mass 1.14 kg slides without friction on a horizontal table. find the torque placed on the mass by the string
An elastic cord is 69 cm long when a weight of 57 N hangs from it but is 70 cm long when the weight of 75 N hangs from it. What is the "spring" constant k of this elastic cord.
Assuming a forward contract was entered into on December 16, illustrate what would be the net impact on Car Corp's 2009 income statement related to this transaction?
A 1700kg car travelling at a speed of 40m/s skids to the halt on wet concrete where f_k = 0.3. How long are the skid marks.
An 85.1 kg base runner begins his slide into second base while moving at a speed of 5.9 m/s. The coefficient of kinetic friction between his clothes and ground is 0.68. He slides so that he comes to rest just as he reaches the base.
A 42 kg pole vaulter running at 11 m/s vaults over the bar. Her speed while she is above the bar is 0.7 m/s. Avoid air resistance, as well as any energy absorbed by pole, and determine her altitude as she crosses the bar.
What is the speed of the bowl? The speed of sound is 340 meters per second.
Each cable has a length of l = 2.90 m. Illustrate what is the tension T in each of the cables? Use 9.80 m/s2 for the magnitude of theacceleration due to gravity.
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