A Proton That Is Moving Freely Has a Wavelength of 0.600

A proton that is moving freely has a wavelength of 0.600 pm. (m_proton = 1.67 × 10^-27 kg, e = 1.60 × 10^-19 C, h = 6.626 × 10^-34 J ∙ s)
(a) What is its momentum?
(b) What is its speed?
(c) What potential difference would it have been accelerated through, starting from rest, to reach this speed?

Correct Answer:

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(a) 1.10 × 10^-21 kg ∙ m...

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