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You have a iron rod with length of 1 lightyear. If you push one end of rod after how much time other end will move?

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You have a iron rod with length of 1 lightyear. Now, suppose you pushed one end of the rod. About how much time will pass before the other end moves?

Following are possibilities, which one would be correct and why?
a) One year
b) Instantly
c) One week
d) More than 1000 years

posted Oct 5, 2015 by anonymous

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