Solve for x. 2x−45=x+4
2 answers:
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Answer:
You are at the top of the Empire State Building on the 102nd floor, which is located 373 m above the ground when your favorite superhero flies over the building parallel to the ground at 70.0% the speed of light.
You have never seen your favorite superhero in real life. Out of curiosity you calculate her height to be 1.57 mm . If the superhero landed next to you, how tall would she be when standing?
Step-by-step explanation:
so this problem is from Einstein's special theory of relativity about length contraction.
the formula is given by:
where
c is speed of light and v is velocity of object.
L is called proper length. L' is length that the observer measure in moving frame.
here velocity of object is 70% speed of light. i.e
so
putting all values