The diagram below shows a light ray from a pencil hitting a mirror. Which ray shows the correct direction of the reflected ray?

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If jill was traveling at 300 miles in 4 hours due south what was his velocity in miles per minute a) 75 miles per hour due south b) .02 miles per second due south c) .5 miles per second due south d) 1 mile per hour due south

Which substance partical has negligible massand travels around outsidethe nucleus

Why is a noble gas different from other elements?