## maparicio 3 years ago How many meters does light travel in 1 nanosecond?

1. 3psilon

$\frac{ 3x10^{8} meters}{ 1 \sec } * \frac{ 1.0x10^-9 seconds }{ 1 nanosecond }$ This will give you meters per 1 nanosec

2. maparicio

Thank you, can you help me with this part: By bouncing laser beams off a reflector placed on our moon by the Apollo astronauts, astronomers can make very accurate measurements of the earth-moon distance ( ).How long after it is sent does it take such a laser beam (which is just a light beam) to return to earth?

3. 3psilon

So do they give you the distance from earth to moon?

4. maparicio

nevermind thanks but I figured it out

5. 3psilon

Okay Np man