Light travels at an approximate rate of 1.9×105 mi./sec. There are about 3.2×107 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
To find out how many miles light travels in a year, we can multiply the speed of light by the number of seconds in a year.
1.9×10^5 mi./sec x 3.2×10^7 sec/year = 6.08×10^13 miles/year.
Therefore, light travels approximately 6.08×10^13 miles in a year.
To find the total distance light travels in a year, we can multiply the speed of light by the number of seconds in a year.
Speed of light = 1.9×10^5 mi./sec
Seconds in a year = 3.2×10^7 sec
Distance traveled in a year = Speed of light × Seconds in a year
Distance traveled in a year = 1.9×10^5 mi./sec × 3.2×10^7 sec
Now, multiply the numerical parts and add the exponents:
= (1.9 × 3.2) × (10^5 × 10^7) mi.
= 6.08 × 10^12 mi.
Therefore, light travels approximately 6.08 × 10^12 miles in a year, expressed in scientific notation.
To find the number of miles light travels in a year, we need to multiply the speed of light by the number of seconds in a year.
The speed of light is approximately 1.9×10^5 mi/s.
The number of seconds in a year is approximately 3.2×10^7 seconds.
To find the total distance in miles light travels in a year, we multiply the two values:
(1.9×10^5 mi/s) × (3.2×10^7 seconds)
To multiply numbers in scientific notation, we need to multiply the coefficients and add the exponents:
1.9 × 3.2 = 6.08
10^5 × 10^7 = 10^12
Therefore, the total distance light travels in a year is approximately 6.08 × 10^12 miles.