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Chemistry, 31.08.2019 16:10 20vmiller

When a book sits on a shelf, what force (if any) does the shelf exert on the book?
a) friction
b) a normal force
c) a action force
d) the weight of the book
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When a book sits on a shelf, what force (if any) does the shelf exert on the book?
a) frictio...

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