The de Broglie wavelength of a car (1.0 × 10³ kg)traveling at 75 km/hr is ________ m.

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Quizplus · Accepted Answer

The de Broglie wavelength is calculated using the formula λ = h/p, where h is Planck's constant (6.626 × 10^-34 m^2 kg/s) and p is the momentum (mass × velocity). Converting 75 km/hr to m/s gives 20.833 m/s. The momentum p = 1.0 × 10^3 kg × 20.833 m/s = 20833 kg m/s. Thus, λ = 6.626 × 10^-34 / 20833 ≈ 3.2 × 10^-38 m.

The De Broglie Wavelength of a Car (1