Chapter 1: Q15P (page 9)

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 a fortnight?

Expert verified

The number in microseconds in the fortnight is $1.21 \times 10^{12} μ s$ .

Step by step solution

Consider there are 2 weeks in one fortnight and 7 days in one week.Use dimensional analysis to find 2.0 weeks in microseconds.

$2.0 w e e k s . (\frac{7 d a y}{1 w e e k}) . (\frac{24 h}{1 d a y}) . (\frac{60 m i n}{1 h}) . (\frac{60 s}{1 m i n}) = 1209600 s$

Thus, there are 1209600 s in a week.

Convert the seconds into microseconds using dimensional analysis.

$\begin{array}{rcl} 1209600 s & = & 1.21 \times 10^{6} s \times (\frac{1 μ s}{10^{- 6} s}) \\ = & 1.21 \times 10^{12} μ s \end{array}$

Therefore, there $1.21 \times 10^{12}$ are microseconds in fortnight.

Unlock Step-by-Step Solutions & Ace Your Exams!

Over 30 million students worldwide already upgrade their learning with Vaia!

Recommended explanations on Physics Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.