Question

Scientific Notation:

1. The body of a 150 lb person contains 2.3 * 10 to the -4 lb of copper.How much copper is contained in the bodies of 1200 such people?

2. The speed of light is appromiately 3 * 10 to the power of 8 m/s. How far does light travel in 6.0 * 10 to the first power seconds?

Answer 1

1. The body of a 150 lb person contains 2.3 * 10 to the -4 lb of copper.How much copper is contained in the bodies of 1200 such people?

\[2.3\times 10^{-4}\times1.2\times10^{3}\]
\[(2.3\times1.2)\times (10^{-4+3})\]
\[2.76\times10^{-1}\]

.2. The speed of light is appromimately 3 * 10 to the power of 8 m/s. How far does light travel in 6.0 * 10 to the first power seconds?
\[3\times10^{8}\times6.0\times10^{1}\]
\[(3\times6)\times(10^{8+1})\]
\[18\times10^9\]
\[1.8\times10\times10^{9}\]
\[1.8\times10^{10}\]

Hope this helps!