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26 solutions

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

De Broglie Wavelength

Q. A sodium flame has a characteristic yellow color due to emissions of wavelength 183 nm. What is the mass equivalence of one photon of this wavelength (1 J = 1 kg.m62/s^2)? (Enter your answer in scientific notation.)

Solved • Oct 16, 2019

De Broglie Wavelength

Q. How quickly must a 58.7-g tennis ball travel in order to have a de Broglie wavelength that is equal to that of a photon of green light (5.40x10^3 A)? Enter your answer in scientific notation.

Solved • Oct 16, 2019

De Broglie Wavelength

Q. How fast must a 145.9-g baseball travel in order to have a de Broglie wavelength that is equal to that of an x-ray photon with λ = 81.0 pm? Enter your answer in scientific notation.

Solved • Oct 16, 2019