Aplanet is 15 light years from earth. at which of the following speeds will the crew of a spaceship complete the trip to the planet in 8 years?
a) 0.78c
b) 0.85c
c) 0.88c
d) 0.92c

option c) 0.88c is the correct answer

Explanation:

using the Lorrentz equation we have

where,

t = time taken to cover the distance

d = Distance

v = velocity

c = speed of light

given

d = 15 light years

Now,

or

or

or

or

or

or

scorpions are,

c.arachnids

  scorpions are animals in the order scorpiones, under the class arachnida, which makes them a distant cousin of spiders

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