Question

Suppose an astronaut travels to Neptune, a distance of 4.4 billion kilometers from Earth, and then returns to Earth. She travels at 0.8c. How long does the round trip take, according to her watch?

Group of answer choices

4.9 hours

3.15 hours

8.15 hours

6.67 hours

Answer #1

An astronaut is traveling from the Earth to the planet Neptune.
At a speed of 0.73 c, the trip takes 2.75 hours in the astronaut’s
frame of reference.
How much time does it take in the Earth’s frame of
reference?
What is the distance from the Earth to Neptune in the Earth’s
frame of reference?
While traveling in the rocket the astronaut measures the length
of the ship to be 826 m and the radius to be 85.0 m. What...

5. An astronaut is traveling from the Earth to the planet
Neptune. At a speed of 0.73 c, the trip takes 2.75 hours in the
astronaut’s frame of reference.
a) How much time does it take in the Earth’s frame of
reference?
b) What is the distance from the Earth to Neptune in the Earth’s
frame of reference?
c) While traveling in the rocket the astronaut measures the
length of the ship to be 826 m and the radius to...

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