Neil A. Armstrong was the first person to walk on the moon. The distance between

Question

Neil A. Armstrong was the first person to walk on the moon. The distance between the earth and the moon is 3.85 Times 10^8 m. Find the time it took for his voice to reach the earth via radio waves, Someday a person will walk on Mars, which is 5.60 Times 10^10 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. By accessing this Question Assistance, you you earn points based on the Point Potential Policy set by your instructor.

Explanation / Answer

a) Radio waves travel at the speed of light, 186,000 miles per second

V = 186000 mile/sec = 299337240 = 3*10^8 m/s

distance = 3.85*10^8 m

so time taken = distance/speed

time taken 3.85*10^8/( 3*10^8 ) = 1.28 sec

b) Radio waves travel at the speed of light, 186,000 miles per second

V = 186000 mile/sec = 299337240 = 3*10^8 m/s

now distance = 560*10^8 m

time taken = 560/3 sec = 186.66 sec

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