There are 86400 sec in a day.

Question:

 There are 86400 sec in a day. How many days long is a second? Express your answer in scientific notation.

Solution:

Total seconds in a day = 86400

So, a second is long as 1/86400 = 0.000011574

Scientific notation of 0.000011574= 1.1574 x 10-5days

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