Light travels at an approximate rate of 1.9x10 to the power of 5 mi./sec. There are about 3.2x10 to the power of 7 seconds in a year. About how many miles does a light travel in a year? Write the answer in scientific notation. Express the answer to the exact decimal place.
To calculate the distance traveled by light in a year, we need to multiply the velocity of light (1.9x10^5 mi./sec) by the number of seconds in a year (3.2x10^7).
(1.9x10^5 mi./sec) * (3.2x10^7 sec/year) = 6.08x10^12 mi/year
Therefore, light travels approximately 6.08x10^12 miles in a year.