Question: An electron has a de Broglie wavelength = 4.5 10-10 m. (a) What is its momentum? (b) What is its speed? (c) What

An electron has a de Broglie wavelength λ = 4.5 × 10-10 m.
(a) What is its momentum?
(b) What is its speed?
(c) What voltage was needed to accelerate it from rest to this speed?

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