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Lelechka [254]
3 years ago
6

A star has a spectrum shift exhibiting a red shift. What can you conclude about the distance from earth to that star

Physics
2 answers:
Akimi4 [234]3 years ago
6 0
Red shift in the spectrum of a star is always taken to mean that the source of the light is moving away from us.

That's the whole basis for the notion of the expanding universe, since we don't know of any other mechanism that can shift light toward longer wavelengths.
sergejj [24]3 years ago
5 0
Its going away cuz red shift goes away (somehow i think of hell so think that u wanna go away from it)
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A planet exerts a gravitational force of magnitude 4e22 N on a star. If the planet were 3 times closer to the star (that is, if
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3.6\times10^{23} N

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2 years ago
Normally, jet engines push air out the back of the engine, resulting in forward thrust, but commercial aircraft often have thrus
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When the ejected air is moving in the downward direction then the thrust force acts in the upward direction, due to reversal thrust, the jets can take off vertically without needing a runway this way.

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Commercial aircraft moves the ejected air in the forward direction means that the thrust will acts opposite to the motion of the aircraft that is backward direction due to thrust reversal. This thrust force might be used to decelerate the craft.

Uses of thrust reversal in practice:

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