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Mathematics, 23.10.2019 03:00 molinaemily009
Aset of twins, andrea and courtney, are initially 10 years old. while courtney remains on earth, andrea rides on a spaceship which travels away from earth at a speed of 0.50 c for five years (as measured by courtney), then immediately turns around and comes back at 0.50c . when andrea returns, courtney is 20 years old. how old is andrea upon her return?
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Aset of twins, andrea and courtney, are initially 10 years old. while courtney remains on earth, and...
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