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Proceedings of the National Academy of Sciences of the United States of America, Vol. 110, No. 7 (February 12, 2013), pp. 2452-2459 (8 pages) Recent experiments have shown that spreading epithelial ...
Multiple forces act on an object at the same time. The size and direction of these forces determines the movement of the object. Show the forces acting on an object in a free body diagram. The arrows ...
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