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Chemistry, 23.11.2019 07:31 rachelsweeney10

When communicating with apollo astronauts, there is approximately a 1.3 second delay in one-way communication. this is because

a)
space is a vacuum.

b)
the moon has virtually no atmosphere.

c)
radio waves travel at a speed of 186,000 miles/s.

d)
of the scattering of electromagnetic waves in space.

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