Physics 1029A/B Lecture Notes - Lecture 2: Blood Pressure, None Of The Above, Circulatory System

• School: Western University
• Department: Physics
• Course: Physics 1029A/B
• Professor: Martin Zinke- Allmang

Document Summary

12. 2. 2: pressure in lq"s with a visible surface (p. g. In a system with an identifiable surface of the fluid, y1=0 and p1=patm. The atmospheric pressure is the proper value of the pressure of the fluid surface since it is an meq. Pascal"s law does not apply to the fluid air. This is because gases are compressible and their density depends on pressure: see in the lecture or on page 5 when trying to calculate the height of the upper end of the atmosphere. Pascal"s law does not contain any info on the shape of the container. Regardless of the shape of the container, pressure increases below the surface and results in a fixed value at a given depth. In particular, the term gd represents a gauge pressure. Pressure results in a fixed value at a given depth, regardless of the container. Notice that they are all at the same level at meq.