An electron's de Broglie wavelength is 4.8 μm.What is its speed?

Name: An electron's de Broglie wavelength is 4.8 μm.What is its speed?
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The de Broglie wavelength λ is given by λ = h/p, where h is Planck's constant and p is momentum. For an electron, p = mv, where m is the electron mass and v is its speed. Solving for v gives v = h/(mλ). Substituting h = 6.626 × 10^-34 Js, m = 9.11 × 10^-31 kg, and λ = 4.8 × 10^-6 m, we find v ≈ 1.5 × 10^2 m/s.

An Electron's De Broglie Wavelength Is 4