(a) neil a. armstrong was the first person to walk on the moon. the distance between the earth and the moon is 3.85 × 108 m. find the time it took for his voice to reach the earth via radio waves. (b) someday a person will walk on mars, which is 5.60 × 1010 m from the earth at the point of closest approach. determine the minimum time that will be required for a message from mars to reach the earth via radio waves.

(a):The time what it takes his voice reach the earth via radio waves is t1= 1.28 seconds.

(b): The time what it takes his voice reach from Mars to the earth via radio waves is t2= 186.66 seconds.

Explanation:

d1= 3.85 *10⁸ m

d2= 5.6 *10¹⁰ m

C= 300,000,000 m/s

t1= d1/C

t1= 1.28 s

t2= d2/C

t2= 186.66 s

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."