Unit 3B

 $\frac{1\ candy\ bar}{1\ \times10^6\ joules}$  

 $\frac{1\ hour\ of\ running}{4\ \times10^6\ joules}$  

 $\frac{1\ candy\ bar}{1\ \times10^6\ joules}\cdot\frac{4\times10^6\ joules}{1\ hour\ run}=\frac{4\ candy\ bars}{\text{1 hour run}}$  

 $\frac{4\ candy\ bar}{1\ hour\ run}\cdot\ 8\ hours\ run\ =\ 32\ candy\ bars$  

 $\frac{1\ liter\ of\ oil}{1.2\times10^7\ joules}\cdot\frac{5\times10^7joules}{1\ house\ \left(daily\right)}$  

 $\frac{5\ liters\ of\ oil}{1.2\ houses\ \left(daily\right)}=4.16666666\ liters\ per\ house\ daily$  

4.16666 liters per day x 365 days = 1520.83 liters

 $\frac{5\times10^7\ joules}{1\ house}\cdot10,000\ house=5\times10^{11}\ joules\ needed$  

 $5\times10^{11}\ joules\ \cdot\frac{1\ liter\ of\ water}{6.9\times10^{13}\ joules}$  

 $\frac{5}{6.9}\cdot10^{11-13}\ joules\ =0.724\times10^{-2}\ joules$  

0.007 joules

 $\frac{2,690,000\ deaths}{1\ year}\cdot\frac{1\ years}{365\ days}\cdot\frac{1\ day}{24\ hours}\cdot\frac{1\ hour}{60\ \min}\approx5.11796\ deaths\ per\ \min$  

 $1cm\times1cm\times1cm\times\frac{1\ meter}{10^2\ cm}\times\frac{1\ meter}{10^2\ cm}\times\frac{1\ meter}{10^2\ cm}$  

 $\frac{1\ meter\times meter\times meter}{10^6}\times\frac{1\ micrometer}{10^{-6}\ meter}\times\frac{1\ micrometer}{10^{-6}\ meter}\times\frac{1\ micrometer}{10^{-6}\ meter}$  

 $\frac{1\ cubic\ micrometers}{10^{-12}}\times\frac{1\ cell}{100\ cubic\ micrometers}$  

 $\frac{1}{10^{-10}}\ cells\ =\ 10^{10}\ cells$