Chapter 40: Q. 12 (page 1175)
A helium atom is in a finite potential well. The atom’s energy isbelow . What is the atom’s penetration distance into the classically forbidden region?
Short Answer
The penetration depth is
Chapter 40: Q. 12 (page 1175)
A helium atom is in a finite potential well. The atom’s energy isbelow . What is the atom’s penetration distance into the classically forbidden region?
The penetration depth is
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Get started for freeTwo adjacent energy levels of an electron in a harmonic potential well are known to be and . What is the spring constant of the potential well?
Tennis balls traveling faster than routinely bounce off tennis rackets. At some sufficiently high speed, however, the ball will break through the strings and keep going. The racket is a potential-energy barrier whose height is the energy of the slowest string-breaking ball. Suppose that atennis ball traveling at is just sufficient to break the -thick strings. Estimate the probability that a ball will tunnel through the strings without breaking them. Give your answer as a power of rather than a power of.
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A -long box has a thin partition that divides the box into a-long section and a-long section. An electron confined in the shorter section is in the state. The partition is briefly withdrawn, then reinserted, leaving the electron in the longer section of the box. What is the electron’s quantum state after the partition is back in place?
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