Chemistry, 27.09.2020 09:01 SuperWoman9172
A radar signal is sent into space and travels at a speed of 300,000 km/s. It takes 20 seconds for the signal to return to Earth.
What is the velocity of the radar signal?
Group of answer choices
20 s
300,000 km/s
300
1
Answers: 1
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Answers: 3
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Answers: 3
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