Quantum Physics

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• An electron and a photon each have a wavelength of 2A°. What are their momentum and energies? Given: λ=2 Å =2×10⁻¹⁰ m, h=6.63×10⁻³⁴ J s, m_e=9.1×10⁻³¹ kg, c=3×10⁸ m/s. Momentum (same for both, since p=h/λ ): p=frac6.63×10⁻³⁴2×10⁻¹⁰=3.... Quantum Physics 1 answer