H-alpha line is a red visible spectral line in hydrogen atom with a wavelength of 656.3 nm. Consider five distant stars labeled A, B, C, D, and E. The light from these starts was detected on Earth and, after performing spectral analysis, the following H-alpha wavelengths were measured: A = 665.5 nm, 653.9 nm, Ap = 663 nm, and λ = 661.2 nm. λβ Which star has the slowest speed relative to Earth, in which direction and how fast does it move? The slowest star is C✓ and it moves towards = 643.7 nm, Ac = The speed of the slowest star (in km/s), Vslowest = -1.095E12 x Units km/s Which star has the fastest speed relative to Earth, in which direction and how fast does it move? The fastest star is B v and it moves towards The speed of the fastest star (in km/s), Vfastest = Earth. -5.73E6 Earth. x Units km/s

H-alpha line is a red visible spectral line in hydrogen atom with a wavelength of 656.3 nm. Consider five distant stars labeled A, B, C, D, and E. The light from these starts was detected on Earth and, after performing spectral analysis, the following H-alpha wavelengths were measured: A = 665.5 nm, 653.9 nm, Ap = 663 nm, and λ = 661.2 nm. λβ Which star has the slowest speed relative to Earth, in which direction and how fast does it move? The slowest star is C✓ and it moves towards = 643.7 nm, Ac = The speed of the slowest star (in km/s), Vslowest = -1.095E12 x Units km/s Which star has the fastest speed relative to Earth, in which direction and how fast does it move? The fastest star is B v and it moves towards The speed of the fastest star (in km/s), Vfastest = Earth. -5.73E6 Earth. x Units km/s

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter11: Gravity, Planetary Orbits, And The Hydrogen Atom

Section: Chapter Questions

Problem 13OQ

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A hydrogen atom undergoes a transition from an excited state to the ground state by emitting a photon. The energy difference between the excited state and the ground state is 2.04 eV. The wavelength of the emitted photon is measured to be 656 nm. Calculate the frequency and the energy of the emitted photon in Joules. (Note: You may use the following conversions: 1 eV = 1.6 x 10^-19 J and the speed of light, c = 3.0 x 10^8 m/s) Give your answer to the nearest whole number.
Calculate the wavelength, in nanometers, of the photon emitted when the electron in a hydrogen atom transitions from the level n1 = 8 to level n2 = 2.
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