# Physics Help!!

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A laser beam is directed at the Moon, 380,000 km from Earth. The beam diverges at an angle of 6.2×10−5 rad. What diameter spot will it make on the Moon?

• Physics Help!! -

diameter= angle*distance= 6.2E-5*380000km=23km check that.

• Physics Help!! -

Initially I got 2356000 and I made that 2.4 x 10^6 because they wanted two significant figures but that was incorrect. I tried your answer and that is also not right. What am I doing wrong here? Please helP!

• Physics Help!! -

23.6 km or 23,600 meters looks right to me.

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