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during blood transfusion the needle is inserted in...

Question:
During blood transfusion the needle is inserted in a vein where the gauge pressure is 2000 Pa. At what height must the blood container be placed so that blood may just enter the vein? [Use the density of whole blood from Table 10.1].

Answer:

Gauge pressure, P = 2000 Pa

Density of whole blood, p = 1.06 × 10³ kg m^-3

Acceleration due to gravity, g = 9.8 m/s²

Height of the blood container = h

Pressure of the blood container, P = hpg

∴ h = P / pg

= 2000 / 1.06 x 10³ x 9.8

= 0.1925

The blood may enter the vein if the blood container is kept at a height greater than 0.1925 m, i.e., about 0.2 m.

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Question:
During blood transfusion the needle is inserted in a vein where the gauge pressure is 2000 Pa. At what height must the blood container be placed so that blood may just enter the vein? [Use the density of whole blood from Table 10.1].

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Question: During blood transfusion the needle is inserted in a vein where the gauge pressure is 2000 Pa. At what height must the blood container be placed so that blood may just enter the vein? [Use the density of whole blood from Table 10.1].

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Popular questions of class 11 Physics

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Question:
During blood transfusion the needle is inserted in a vein where the gauge pressure is 2000 Pa. At what height must the blood container be placed so that blood may just enter the vein? [Use the density of whole blood from Table 10.1].