he International Space Station (ISS)orbits Earth at an altitude of 422 km. (a) What is its orbital speed?(b) What is the speed of a receiving antenna on Earth’s equator?(c) Suppose the ISS is moving directly toward the antenna, and theantenna is moving directly away from the ISS. If the ISS transmitsa radio signal at 145.8000 MHz, what frequency is received by theantenna

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Speed of light

The speed at which the light travels in a vacuum is unbiased for both the source and inertial frame of reference of the observer. This was postulated by the physicist, Albert Einstein, by observing the theory of electromagnetism of Maxwell. Also, there was no evidence for the luminiferous aether, that is, the medium for the propagation of light where the electromagnetic field exists.