Physics, 02.09.2020 22:01 paytonpaige22
g An astronaut must journey to a distant planet, which is 189 light-years from Earth. What speed will be necessary if the astronaut wishes to age only 12 years during the round trip? (Give your answer accurate to four decimal places.)
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Which of the following is the main energy source for the sun? a. fission of hydrogen b. fusion of hydrogen c. fusion of helium d. fission of iron
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g An astronaut must journey to a distant planet, which is 189 light-years from Earth. What speed wil...
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