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

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Chapter1: Units, Trigonometry. And Vectors
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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,
AB = 643.7 nm, Ac = 653.9 nm, Ap = 663 nm, and AE = 661.2 nm.
Which star has the slowest speed relative to Earth, in which direction and how fast does it move?
✓ Earth.
The slowest star is CV and it moves towards
The speed of the slowest star (in km/s), Vslowest
Which star has the fastest speed relative to Earth, in which direction and how fast does it move?
The fastest star is B ✓
and it moves towards
=
-1.095E12 X Units km/s
The speed of the fastest star (in km/s), Vfastest = -5.73E6
Earth.
x Units km/s
Transcribed Image Text: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, AB = 643.7 nm, Ac = 653.9 nm, Ap = 663 nm, and AE = 661.2 nm. Which star has the slowest speed relative to Earth, in which direction and how fast does it move? ✓ Earth. The slowest star is CV and it moves towards The speed of the slowest star (in km/s), Vslowest Which star has the fastest speed relative to Earth, in which direction and how fast does it move? The fastest star is B ✓ and it moves towards = -1.095E12 X Units km/s The speed of the fastest star (in km/s), Vfastest = -5.73E6 Earth. x Units km/s
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