The heart pumps blood at an average rate of 5L/min. The gauge pressure on the venous (intake) side is 0mm Hg and that on the arterial (discharge) side is 100mm Hg. Energy is supplied to the heart as heat released bytheabsorptionof :5mL(STP)O2/minisabsorbed, and20.2Jis released per mLof O2 absorbed. Part of thisabsorbed energy isconverted to ow work (the work done to pump blood through the circulatory system), and the balance is lost as heat transferred to the tissues surrounding the heart. (a) Simplify Equation 7.4-12 for this system, assuming (among other things) that there is no change in internal energy from inlet to outlet. (b) What percentage of the heat input to the heart _ Qin is converted to ow work? (The answer may be thought of as the efciency of the heart as a pump.)
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Physics, 22.06.2019 01:30
Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz
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Physics, 22.06.2019 09:00
Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than
Answers: 3
The heart pumps blood at an average rate of 5L/min. The gauge pressure on the venous (intake) side i...
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