Imagine that you have obtained spectra for several galaxies and have measured the observed wavelength of a hydrogen emission line that has a rest wavelength of 656.3 nanometers. here are your results: galaxy 1: observed wavelength of hydrogen line is 660.0 nanometers. galaxy 2: observed wavelength of hydrogen line is 665.8 nanometers. galaxy 3: observed wavelength of hydrogen line is 682.7 nanometers. calculate the redshift, z, for each of these galaxies.
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Physics, 21.06.2019 16:10
In 1995 a research group led by eric cornell and carl wiemann at the university of colorado successfully cooled rubidium atoms to the 20-200 nk temperature range. assuming (incorrectly) that the rubidium atoms behave liké particles of a classical ideal gas, calculate the rms speed of a rubidium atom at a temperature of 112.0 nk. in the experiments one particular isotope of rubidium was used, rubidium-87. the molar mass of this isotope is 86.91 q/mol. tries 0/20 submit answer
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Physics, 21.06.2019 19:40
An ideal spring has a spring constant (force constant) of 2500 n/m, is stretched 4.0 cm, how much elastic potential energy does it possess? (a) 3j (b) 0.00j (c) 1j (d) 2j (e) 4j
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Physics, 22.06.2019 03:00
Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c
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Physics, 22.06.2019 13:00
Ways that industry and agriculture use physical properties to separate substances
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Imagine that you have obtained spectra for several galaxies and have measured the observed wavelengt...
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