Exam-style question
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Using the de Broglie equation, calculate the wavelength of an electron with a momentum of 4.5 x 10^-24 kg m/s. (h = 6.63 x 10^-34 J s).
Model answer
What a good answer should say
- The wavelength of the electron is 1.47 x 10^-10 m.
Explanation
Why this works
This question tests the application of the de Broglie equation, which relates wavelength to momentum. The strong answer demonstrates the correct use of the formula and substitution of values.
Common mistake
No common mistake is linked to this question yet.