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Inertial Reference Frames | 14 mins | 0 completed | Learn |

Special Vs. Galilean Relativity | 17 mins | 0 completed | Learn |

Consequences of Relativity | 53 mins | 0 completed | Learn |

Lorentz Transformations | 46 mins | 0 completed | Learn |

Solution: An astronaut travels at 0.8 c from Earth to a star that is 20 light years away from Earth, as measured from the Earth's perspective. If the astronaut is 25 years old when leaving Earth, what is the age of the astronaut when arriving at the star?

An astronaut travels at 0.8 c from Earth to a star that is 20 light years away from Earth, as measured from the Earth's perspective. If the astronaut is 25 years old when leaving Earth, what is the age of the astronaut when arriving at the star?

Muons are commonly produced in the upper atmospher...

Ted travels in a spaceship at 0.45 c relative to A...

An astronaut travels at 0.8 c from Earth to a star...

A spaceship passes an Earth-bound observer at a sp...

A spaceship passes an observer on Earth at a speed...

A spaceship flies at a speed of 0.4c towards a sta...

A subatomic particle called the pion has a measure...

At what speed does time dilation have a "significa...

Manufactured on Earth, a cube has a side length of...

In The Planet of the Apes, humans "traveled" into ...

A flight in an airplane going 300 m/s takes one ho...

A flight in a space ship going half the speed of l...

Anna boards a spaceship and does an interstellar f...

An arrow of length 1.00 m flies by you at 0.8c. Yo...

An arrow of length 1.00 m flies by you at 0.8c. If...

An arrow of length 1.00 m flies by you at 0.8c. In...

Samir (who is standing at rest on the ground) star...

Red light is emitted from a source at rest at a wa...

It is known that the universe is expanding, so all...

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