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svlad2 [7]
3 years ago
6

Suppose you measure a standing person's blood pressure by placing the cuff on his leg 0.470 m below the heart. calculate the pre

ssures you would observe (in units of mm hg) if the pressure at the heart were 120 over 80 mm hg. assume there is no loss of pressure due to resistance in the circulatory system (a reasonable assumption, since major arteries are large).
Physics
1 answer:
never [62]3 years ago
7 0
The first pressure is illustrative of the maximum output of the heart; the second is because of the elasticity of the arteries in upholding the pressure between beats. Solution:760 mm HG is equivalent to 13.6*.760 m =10.34 m H2O 
Then multiply: 470/10.34 * 760mmHg to each of the readings. The answer is about 35 mmHg add this to the current reading of 120/80
Therefore:ΔP=35 mm Hg,Leg blood pressure is 155/115.
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When the capacitor is connected to the voltage, a charge Q is stored on its plates. Calling C_0 the capacitance of the capacitor in air, the charge Q, the capacitance C_0 and the voltage (V_0=391 V) are related by

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when the source is disconnected the charge Q remains on the capacitor.


When the space between the plates is filled with mica, the capacitance of the capacitor increases by a factor 5.4 (the permittivity of the mica compared to that of the air):

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