Radio astronomers use radio frequency waves to identifiy the elements in distant stars. one of the lines that is studied is designated the 156α line. this spectral line refers to the transition in hydrogen from ni = 157 to nf = 156. calculate the wavelength λ and frequency f of the electromagnetic radiation that is emitted for the 156α transition.
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Physics, 22.06.2019 09:00, montgomeryaevans
This is really important 1.which of the following prefixes represents the largest value? (2 points)gigahectorkilomilli2.which of the following types of graphs is best for plotting the mean, median, and mode of data? (2 points)bar graphbox-and-whiskercircle graphstem-and-leaf
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Physics, 22.06.2019 23:20, pr47723
Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above
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Physics, 23.06.2019 01:00, rachelvasky9
How much work would it take to move a coulomb charge across a 4 volt potential difference?
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Radio astronomers use radio frequency waves to identifiy the elements in distant stars. one of the l...
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