Two twins are 25.0 years old when one of them sets out on a journey through space
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Two twins are 25.0 years old when one of them sets out on a journey through space at nearly constant speed. The twin in the spaceship measures time with an accurate watch. When he returns to Earth, he claims to be 31.0 years old, while the twin left on Earth knows that she is 43.0 years old. What was the speed of the spaceship?
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The spaceship clock as seen by the spacetwin reads the trip tim...View the full answer
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