Physics, 09.10.2019 22:30 hsjsjsjdjjd
Amajor leaguer hits a baseball so that it leaves the bat at a speed of 32.7 m/s and at an angle of 34.6° above the horizontal. you can ignore air resistance. a)at what two times is the baseball at a height of 11.5 m above the point at which it left the bat?
b)calculate the horizontal component of the baseball's velocity at an earlier time calculated in part a.
c)calculate the vertical component of the baseball's velocity at an earlier time calculated in part a.
d)calculate the horizontal component of the baseball's velocity at a later time calculated in part a.
e)calculate the vertical component of the baseball's velocity at a later time calculated in part a.
f)what is the magnitude of the baseball's velocity when it returns to the level at which it left the bat?
g)what is the direction of the baseball's velocity when it returns to the level at which it left the bat?
Answers: 3
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Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.
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Amajor leaguer hits a baseball so that it leaves the bat at a speed of 32.7 m/s and at an angle of 3...
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