Answer to Question #15103 in Astronomy | Astrophysics for filsa
12. An atom at rest emits light at 500nm. What is the observed wavelength if it is moving away from the observer at 10,000 km/sec?
3. What is the energy of a photon of = 600 nm, and in what region of the spectrum does it lie?
2. What is the frequency of an electromagnetic wave of wavelength 0.2 m? In what part of the spectrum is the wave?
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