Cant seem to get these physics problem...?
Write answer in exponential notation
2. Multiply 2.079 x 10^2 m by 0.082 x 10^-1 taking into account significant figures.
3. A light year is the distance light travels in one year (speed of light = 2.998 x 108 m/s). How many miles are in a light year? Give answer in exponential scientific notation.