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.
Answers: 1
Physics, 22.06.2019 05:40, kkbrookly7496
Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?
Answers: 2
Physics, 22.06.2019 11:00, Arielledt10
1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?
Answers: 1
Imagine that you have obtained spectra for several galaxies and have measured the observed wavelengt...
Mathematics, 05.05.2020 06:11