Monday

March 2, 2015

March 2, 2015

Posted by **Mary** on Tuesday, February 19, 2008 at 1:24am.

- Science -
**drwls**, Tuesday, February 19, 2008 at 5:28amYou need to make the second star appear 9 times dimmer than it would at 100 l.y. distance. Since the received light is inversely proportional to the distance squared, that means you must triple the distance. That will put it 300 light years away.

**Answer this Question**

**Related Questions**

science - Suppose that you can just barely see a certain star that is at a ...

Astronomy - The apparent brightness of a Cepheid variable star in a far-away ...

8th grade math - Light travels approximately 5.87 X 10^12 miles in one year. ...

8th grade math - Light travels approximately 5.87 X 10^12 miles in one year. ...

Math - The distance that light travels in 1 year (a light year) is 5.88 x 10^12 ...

Math - How bright a star appears can depend on how much light the star actually ...

Advanced Functions - How bright a star appears can depend on how much light the ...

pre-calc - How bright a star appears can depend on how much light the star ...

Math - A star is 300 light years away from Earth. If the speed of light is 3 X ...

Math - The distance that light travels in 1 year (a light year) is 5.88x10^12 ...