If the frequency of an electromagnetic wave increases, does the energy of the photon increase, decrease, or stay the same?
What will be an ideal response?
The energy of the photon increases.
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We are at the center of the Universe, and hence, everything is expanding away from us.
Answer the following statement true (T) or false (F)
What is the terminal velocity of a 6.00-kg mass object in falling with a drag force with a magnitude that depends on speed, v, as Fdrag = (30.0 N?s/m)v?
A) 1.96 m/s B) 41.9 m/s C) 24.2 m/s D) 12.6 m/s E) 62.2 m/s
What are sources of light pollution and how do those affect astronomical observations?
What will be an ideal response?
Why do hydrogen gas clouds glow red?
A: Remnants of ancient supernova explosions, they've cooled from white hot to reddish over the course of millions of years. B: Their light is highly red-shifted because of the high speeds with which the gas clouds are moving. C: They're members of the Cool Cosmic Clouds Party (CCCP). D: Decay of trace radioactive elements within them heats the clouds until they glow red. E: Electromagnetic radiation from nearby stars heats the clouds until they glow red.