# Science

posted by .

What is a light year? How long does it take for light to reach the Earth from the Sun?

• Science -

A light year is the distance it takes a beam of light to travel in a year.

The speed of light is 2.99 x 10^8 m/s.
Distance from sun to Earth: 150 000 000 Km
*remember to change km to m
use equation: t=d/v
t=150 000 000 000m/2.99 x 10^8 m/s
t=501sec = 8.35 min

**I rounded the distance and the speed of light. Use values you think are correct - ie your textbook. i beleive i may be off by 0.05 min.

## Similar Questions

1. ### Math

It takes 5 1/3 minutes for light from the sun to reach earth. The Moon is closer to earth, so it,s light reaches earth faster about 5 19/60 minutes faster than from the sun. How long does light from the moon take to reach earth.
2. ### Physics

The sun is 1.40•10^11m away and light travels at 3.00•10^8m/s. Calculate how long it takes light from the sun to reach the earth. Express your answer in scientific notation.
3. ### Physics

The sun is 1.40•10^11m away and light travels at 3.00•10^8m/s. Calculate how long it takes light from the sun to reach the earth. Express your answer in scientific notation.
4. ### Physics

The sun is 1.40•10^11m away and light travels at 3.00•10^8m/s. Calculate how long it takes light from the sun to reach the earth. Express your answer in scientific notation.
5. ### Physics

The sun is 1.40•10^11m away and light travels at 3.00•10^8m/s. Calculate how long it takes light from the sun to reach the earth. Express your answer in scientific notation.
6. ### physics

Suppose the Sun is 1.52669 × 108 km from Earth. The speed of light is 2.99792 × 108 m/s. How long does it take for its light to reach us?
7. ### math

the distance from the sun to earth is about 1.5x10^11 meters. suppose light travels at a speed of 3x10^8 meters per second. About how long does it take light from the sun to reach earth?
8. ### Chemistry 101

The distance from the Earth to the sun is approximately 9.37 x 10^7 miles. How long does ti take for light from the sun to reach the earth?
9. ### Chemistry 101

The distance from the Earth to the sun is approximately 9.37 x 10^7 miles. How long does it take for light from the sun, to reach the earth?
10. ### Math

The speed of light is 3x10^8 m/s. If the sun is 1.5 x10^11 meters from the earth, how many seconds does it take light to reach the earth?

More Similar Questions