1. Intro to Physics Units

Astronomers often detect radio waves with wavelengths of $3,000,000,000\mathrm{nm}$. What is this wavelength expressed in decameters (dam)?

The earth's circumference is approximately 40.1 Mm (megameters). What is this circumference in kilometers?

Rewrite $299,800,000\text{ m/s}$ in scientific notation.

Rewrite $9.98\times {10}^7$ in standard form.

Rewrite in scientific notation.

Rewrite $3.41\times {10}^{-4}$ in standard form: