Conversations with astronauts on lunar walks had an echo that can be used to est

Question

Conversations with astronauts on lunar walks had an echo that can be used to estimate the distance to the Moon. The sound spoken by the person on Earth was transformed into a radio signal sent to the Moon, and transformed back into sound on a speaker inside the astronaut's space suit. This sound was picked up by the microphone m the space suit (intended for the astronaut's voice) and sent back to Earth as a radio echo of sorts. If the round-trip time was 2.56 s, what was the approximate distance to the Moon, in meters, neglecting any delays in the electronics? d_Moon = __________

Explanation / Answer

given

t = 2.56 sec

using

equation and ( it covers twice the distance )

2 d = C X t

d = ( 3 X 108 ) X ( 2.56 / 2 )

d = 3.84 X 108 m

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