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April 19, 2014

Homework Help: Physics

Posted by Beth on Saturday, July 21, 2012 at 8:57pm.

Two spaceships A and B are exploring a new planet. Relative to this planet, spaceship A has a speed of 0.54c, and spaceship B has a speed of 0.74c. What is the ratio DA/DB of the values for the planet's diameter that each spaceship measures in a direction that is parallel to its motion?

I keep getting 1.37 which is the incorrect answer. I understand in general how to do the problem, but I must be missing a step

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