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April 19, 2014

April 19, 2014

Posted by **Kyle** on Saturday, October 6, 2012 at 10:50am.

Astronauts often use the unit light year to express intergalactic distances. If light travels 3.00 x .10^10 cm/s and one year is defined as 365 days, how many kilometers does light travel in one year?

- CHEMISTRY! HELP! -
**DrBob222**, Saturday, October 6, 2012 at 3:31pmI would change 3.00E10 cm/s to 3.00E5 km/s first, then

3.00E5 km/s x (60 s/min) x (60 min/hr) x (24 hr/day) x (365 days/yr) = ? km/year.

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