A Radar Pulse Is Bounced Off the Moon at a Distance

question 3

Multiple Choice

A radar pulse is bounced off the Moon at a distance of 400,000 km.What is the time from the transmitting of the pulse until its return?

• A) 1.28 s
• B) 2.56 s
• C) 2.67 s
• D) 3.84 s

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