Twin A makes a round trip at 0.6c to a star 12 light-years away, while twin B stays on the earth. Each twin sends the other a signal once a year by his own reckoning. How many signals does B send during the trip?
Twin A makes a round trip at 0.6c to a star 12 light-years away, while twin B stays on the earth. Each twin sends the other a signal once a year by his own reckoning. How many signals does B send during the trip?
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Transcribed Image Text:Twin A makes a round trip at 0.6c to a star
12 light-years away, while twin B stays on
the earth. Each twin sends the other a
signal once a year by his own reckoning.
How many signals does B send during the
trip?
А. 16
В. 20
С. 32
D. 40
Е. 50
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