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29 solutions

De Broglie Wavelength

Q. A proton travels through space with an effective wavelength of 3x10^-12 m? What is its speed?

Solved • Dec 7, 2019

De Broglie Wavelength

Q. How would you calculate the speed of a hydrogen atom with a wavelength of 1.00 nm? Set up the equation, including conversion factors, but do not do the calculation.

Solved • Nov 21, 2019

De Broglie Wavelength

Q. The mass of a helium atom is four times greater than the mass of a hydrogen atom. A. If a hydrogen atom and a helium atom are travelling at the same speed, what will be the relative wavelengths of the two atoms. Explain you reasoning. B. If a hydrogen atom and a helium atom have the same kinetic energy, what will be the relative wavelengths of the two atoms? Explain your reasoning.

Solved • Nov 21, 2019

De Broglie Wavelength

Q. Imagine an alternate universe where the value of the Planck constant is 6.62607x10^-30 J . s. In that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle and wave properties? Which objects would act like everyday objects, and adequately described by classical mechanics? A raindrop with a mass of 28. mg, 0.7 mm wide, moving at 7.8 m/s.

Solved • Oct 19, 2019

De Broglie Wavelength

Q. Imagine an alternate universe where the value of the Planck constant is 6.62607x10^-30 J . s. In that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle and wave properties? Which objects would act like everyday objects, and adequately described by classical mechanics? A car with a mass of 1800. kg, 4.0 m long, moving at 46.0 km/h.

Solved • Oct 19, 2019

De Broglie Wavelength

Q. Imagine an alternate universe where the value of the Planck constant is 6.62607x10^-30 J . s. In that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle and wave properties? Which objects would act like everyday objects, and adequately described by classical mechanics? A paper airplane with a mass of 5.9 g, 235. mm long, moving at 3.5 m/s.

Solved • Oct 19, 2019

De Broglie Wavelength

Q. Imagine an alternate universe where the value of the Planck constant is 6.62607x10^-30 J . s. In that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle and wave properties? Which objects would act like everyday objects, and adequately described by classical mechanics? A virus with a mass of 4.3x10^-17 g, 290. nm wide, mob=ving at 1.40 μm/s.

Solved • Oct 19, 2019