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PRACTICE · MEMBERSIntermediate · Single correct

PRACTICE / De Broglie wavelength

A wavelength for a moving particle

A nonrelativistic particle has mass 2.0 × 10⁻³⁰ kg and speed 3.0 × 10⁵ m/s. Use h = 6.0 × 10⁻³⁴ J·s.

Find its de Broglie wavelength.

Organize the givens & assumptions
  • m = 2×10⁻³⁰ kg
  • v = 3×10⁵ m/s
  • h = 6×10⁻³⁴ J·s

Nonrelativistic free-particle momentum p = mv; use the given Planck constant and particle mass.

  1. A10−12 m10^{-12}\ \mathrm m
  2. B2×10−9 m2\times10^{-9}\ \mathrm m
  3. C10−9 m10^{-9}\ \mathrm m
  4. D3×10−4 m3\times10^{-4}\ \mathrm m

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