Question

Light travels approximately 982,080,000 ft/s, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in one year. State the number of seconds in one year, using scientific notation. (Remember to use appropriate significant figures.) 3.2 x 10 7 s 3.0 x 10 7 s 3 x 10 7 s

Answer 1

Answer: $3.2\cdot 10^7 s$

Explanation:

In one year, we have 32,000,000 seconds.

In order to convert into scientific notation, we have to:

- count the number of digits after the first digit: 7

- Write the number as first digit + comma + following meaningful digits + 10 to the power of 7

- Therefore, we have $3.2\cdot 10^7 s$