Homework Help: Physics

Posted by Nick on Monday, November 22, 2010 at 12:20pm.

A laser beam is directed at the Moon, 380,000 km from Earth. The beam diverges at an angle of 4.6×10−5 rad.

1. What diameter spot will it make on the Moon?

Physics - drwls, Monday, November 22, 2010 at 12:31pm
spot diameter =
distance * (divergence angle in radians)

The diameter will be in km if you use the distance in km.
Physics - Dick McDickenson, Sunday, October 14, 2012 at 3:19am
3.14

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