Question

A fortnight is a charming English measure of time equal to 2.0 weeks (the word is a contraction of “fourteen nights”). That is a nice amount of time in pleasant company but perhaps a painful string of microseconds in unpleasant company. How many microseconds are in 4 fortnights?

Number
Units
sminhoursdaysyearsmonthsmsµss^-1d^-1nspc-parsecu.s. (universe seconds)s^-1*m^-2

Answer 1

This is just dimensional analysis. You can do this by straight conversion of weeks to days to hours to minutes to seconds...

Since one fortnight is 14 days, then 4 fortnights is equal to :

There are 24 hours in 56 days, 60 minutes in one hours, 60 seconds in one minute:

Now, we know that 1 microsecond = 1x10^-6 seconds, hence:

IN scientific notation: (4.8384)x10^12 microseconds