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The pulmonary valve and the aortic valve as the ventricles begin to contract. A. close B. open C. contract D. relax
answered Sep 9, 2020
4 votes
59.4k views
You throw a baseball directly upward at time ????=0 at an initial speed of 14.9 m/s. What is the maximum height the ball reaches above where it leaves your hand? Ignore air resistance and take ????=9.80
answered Apr 2, 2020
2 votes
21.0k views
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