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Chapter 40: Q. 1 (page 1174)
FIGURE Qshows the de Broglie waves of three equal-mass particles. Which one is moving most slowly? Explain.
The wave is shown in part (c) one is moving most slowly.
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A proton鈥檚 energy is below the top of a -wide energy barrier. What is the probability that the proton will tunnel through the barrier?
An electron in a rigid box absorbs light. The longest wavelength in the absorption spectrum is. How long is the box?
A particle confined in a rigid one-dimensional box of length has an energy level and an adjacent energy level .
a. Determine the values of n and n + 1.
b. Draw an energy-level diagram showing all energy levels from 1 through n + 1. Label each level and write the energy beside it.
c. Sketch the n + 1 wave function on the n + 1 energy level.
d. What is the wavelength of a photon emitted in the transition? Compare this to a typical visible-light wavelength.
e. What is the mass of the particle? Can you identify it?
What is the probability that an electron will tunnel through a gap from a metal to a STM probe if the work function is ?
An electron confined in a harmonic potential well emits a 1200nm photon as it undergoes a quantum jump. What is the spring constant of the potential well?
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