Chemistry

Brent Walls

11 December, 12:20

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.