Light travels at an approximate rate of 1.9×10^5 mi./sec. There are about 3.2×10^7 seconds in a year. About how many miles does light travel in a year? Write the answer in scientific notation. Express the answer to the exact decimal place.(1 point)

Answer 1

To find out how many miles light travels in a year, we need to multiply the speed of light by the number of seconds in a year.

Speed of light in miles/sec = 1.9 × 10^5 mi./sec
Number of seconds in a year = 3.2 × 10^7 seconds

To find the total distance traveled, we multiply the speed of light by the number of seconds in a year:

Total distance traveled = (1.9 × 10^5 mi./sec) × (3.2 × 10^7 seconds)

To multiply the numbers in scientific notation, we multiply the coefficients and add the exponents:

Total distance traveled = 1.9 × 3.2 × 10^5 × 10^7 mi.

When we multiply the coefficients (1.9 × 3.2) and add the exponents (5 + 7), we get:

Total distance traveled = 6.08 × 10^12 mi.

Therefore, light travels approximately 6.08 × 10^12 miles in a year.

Answer 2

is this correct?