Recent content by esb08

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    Traveling to Another Galaxy: Can You Get There Alive?

    Thanks so much. You were very helpful, and I appreciate it
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    Traveling to Another Galaxy: Can You Get There Alive?

    Homework Statement You wish to travel to another galaxy, which is 1,000,000 light years away. You'd like to be still alive when you get there. How fast must you travel? Given enough fuel, can you do this? Homework Equations t/t(proper)=gamma v=v'+u/1+(uv'/c^2) The Attempt at a...
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    Discovering Relativity: Calculating Spaceship Speed and Separation

    okay. i understand that. but using the equation v= v'+u/1 +(uv'/c^2) where v' is the velocity of B relative to the earth, u is the velocity of A relative to B, and v is the velocity of A relative to the Earth then how would i switch around that equation to solve for u? wouldn't it be...
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    Discovering Relativity: Calculating Spaceship Speed and Separation

    wait since the velocities are the same and in opposite directions does that mean the speed of A relative to B is 0??
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    Discovering Relativity: Calculating Spaceship Speed and Separation

    Fun Relativity Question :) Homework Statement two spaceships, A and B, are moving relative to the Earth with speeds 4c/5 in opposite directions. What is the speed of the spaceship A according to an observer on B? According to an observer on B, how much does the separation of the spaceships...
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    Undergrad Ether with a speed of at least 3x10^4 m/sec?

    Why in this experiment was it safe to assume that at some time of the year the Earth should be moving relative to the ether with a speed of at least 3x10^4 m/sec??