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How many years ago is 1 billion seconds ago?
There are 60 seconds in a minute and sixty minutes in an hour, so each hour is 3600 seconds. Multiply 24 to get days, and then 365.25 to get years, accounting for leap years. This is 31,557,600 seconds per year. Divide 1,000,000,000 seconds by 31,557,600 seconds per year, and you get 31 years, 251 days, 7 hours, 46 minutes and 40 seconds. (Why didn't I figure out the months? Because the months aren't equal!)
How many years ago was 5000 years ago?
Well, honey, if you're asking how many years ago 5000 years ago was, the answer is pretty straightforward. 5000 years ago was, surprise surprise, 5000 years ago. Time may fly, but math is pretty consistent.
What is the angular speed of one hour?
One rotation per hour!One rotation per hour!One rotation per hour!One rotation per hour!
Half and hour vs half hour?
The term is actually "half an hour" which is short for "half of an hour". This has same meaning as "half hour" or a rough approximation of 30 minutes.
How long ago was Pythagoras death?
About 2510 years ago.
