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mynameisjeff1417
18.07.2019 •
Physics
The spaceship lilac, based on the purple planet, is 717 m717 m long, as measured at rest. when lilac passes earth, observers there measure its length to be 655 m655 m . at what fraction of the speed of light is lilac moving with respect to earth?
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Ответ:
0.407 c
Explanation:
L₀ = Actual length of the spaceship lilac = 717 m
L = length of spaceship observed = 655 m
v = speed of lilac relative to earth
Using the equation
Inserting the values
v = 0.407 c
Ответ:
I think it's the 2 choice