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Tpy6a [65]
3 years ago
14

The sun exerts a gravitational pull on earth. why doesn't earth fall into the sun?

Geography
1 answer:
Taya2010 [7]3 years ago
5 0
I think it is because the earth produces its own opposing gravitational force.
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When blue shift occurs, how does the wavelength of light that we see change?
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When the source is moving away from the detector, the wavelength of the light emitted from the source appears to be increased as seen by the detector (think of a wave being stretched), as a result the frequency decreases (since, speed of light is constant in all frames). Due to this decrease in frequency the light emitted from the source appears more red (since red color is on low frequency side in the electromagnetic spectrum) compared to the situation when source was at rest.
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