Question

Chapter 24, Problem 02 (a) Neil A. Armstrong was the first person to walk on the moon. The distance between the earth and the moon is 3.85 x 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 x 100 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) Number Units (b) Number Units Click if you would like to Show Work for this question: Open Show Work

Answer 1

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(a) distance between earth and moon, d= 3,85 X108 m. kle know the speed of radio waves v= C = 3 X10 m2 so the time toeken, te da 3,85810 m 3x108 mlec I to 1.283 pec Distance between mans and earth, d= 5.60x100 speed of radio waves, U = C = 3x108 m/s Then the minimum time required to clearest distance between mans teenth speed of raclio waves W t= 5.6081010m 3x100 ml8 t= 186.667 per

A) the time taken by the radio waves to react earth was found to be t=1.283 sec.

B) the minimum time required was found to be t=186.667 sec.