Question

Problem 9

Answer 1

Given information

We have given that the sender is at moon and receiver is at earth.

Step-by-step explanation

Step 1.

Let us assume that the speed of light is the only significant transit time between moon and earth. As both astronaut and receiver are on the surface, we will substract the radious of both moon and earth from the distance of moon to earth.

so the time t is :

   

Here t is time taken by voice to reach earth from moon, d is distance between moon and earth, c is speed of light, is radius of moon and is radius of earth.