Physics, 26.02.2020 23:48, sonykorah7279
Astronomers observe a quasar and measure its spectrum. A particular spectral line has a value of 279.8 nm when measured using a laboratory source. The equivalent line in the spectrum of this quasar is 382.5 nm. Calculate the speed of this quasar relative to the Earth, ignoring relativistic effects. Express your answer in meters/second.
Answers: 2
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Ametal ball with a mass of 0.028 kg is dropped from rest at a height of 1.0 meters above the ground. assuming the energy in the ball is conserved, how much kinetic energy will the ball have when it is 0.5 meters above the ground?
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Astronomers observe a quasar and measure its spectrum. A particular spectral line has a value of 279...
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