When NASA was communicating with astronauts on the Moon,the time from sending on the Earth to receiving on the Moon was 1.28 s.Find the distance from Earth to the Moon.(The speed of radio waves is 3.00 × 10⁸ m/s. ) A)240 000 km B)384 000 km C)480 000 km D)768 000 km

Question

Quizplus · Accepted Answer

The time taken for the radio waves to travel from Earth to Moon can be calculated using the formula:
time = distance / speed
1.28 s = distance / (3.00 × 10^8 m/s)
Solving for distance gives:
distance = 1.28 s × (3.00 × 10^8 m/s) = 384 × 10^6 m = 384,000 km
Therefore, the distance from Earth to the Moon is 384,000 km. 
The correct choice is B.

When NASA Was Communicating with Astronauts on the Moon,the Time