Physics, 21.10.2019 20:00 emmadownum
You observe a spectral line of hydrogen at a wavelength of 522.5 nm in a distant galaxy. the rest wavelength of this line (known as hβ or hydrogen beta) is 486.1 nm. what is the radial velocity of this galaxy in kilometers per second? is it moving toward or away from earth?
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At what time will the interfering waves have an amplitudeof zero?
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Iron is a transition metal with multiple oxidation numbers. (answer the following) a. what is the iron (ii) ion? how does it differ from the iron (iii) ion? b. if iron were to bond with oxygen, predict the formula for each oxidation number of iron. c. how would each formula be named?
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You observe a spectral line of hydrogen at a wavelength of 522.5 nm in a distant galaxy. the rest wa...
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