Concept explainers
(a)
The magnitude of de Broglie wavelength.
(a)
Answer to Problem 1P
The de Broglie wavelength is
Explanation of Solution
The angular wave number from the wave function is
Write the expression to calculate the wavelength.
Here,
Write the expression to calculate
Conclusion:
Therefore, the de Broglie wavelength is
(b)
The magnitude of momentum.
(b)
Answer to Problem 1P
The magnitude of momentum is
Explanation of Solution
Write the expression to calculate the momentum.
Here, p is the momentum and h is the Planck’s constant.
Substitute
Conclusion:
Therefore, the magnitude of momentum is
(c)
The kinetic energy in electron volts.
(c)
Answer to Problem 1P
The kinetic energy in electron volts is
Explanation of Solution
Write the expression to calculate the kinetic energy.
Here, K is the kinetic energy and m is the mass of electron.
Substitute
Conclusion:
Therefore, the kinetic energy in electron volts is
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Chapter 40 Solutions
Physics for Scientists and Engineers with Modern Physics
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