Though the particle in a box (infinite potential well) seems like a very unrealistic potential, it can actually be used to explain a bit about how humans see. the important light-absorbing molecule in human eyes is called retinal. retinal consists of a chain of carbon atoms, roughly 1.5×10−9m long. an electron in this long chain molecule behaves very much like a particle in a box.
1) find the wavelength λn of the photon that must be absorbed by an electron to move it from the nth state of a box to the (n+1)th state. assume that the box has length l and that the electron has mass m.
express your answer in terms of n, l, planck's constant (divided by 2π) ℏ, the speed of light c, and m.
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Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.
Answers: 3
Though the particle in a box (infinite potential well) seems like a very unrealistic potential, it c...
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