PHYS 101 Study Guide - Midterm Guide: Ideal Gas, Wavenumber, Heat Capacity
Document Summary
Gas: adapt volume, adapt shape, can compress, fluid & liquid are not the same! Fluid changes shape in order to match its container. Force due to molecules of fluid colliding with container. Air molecules are colliding with you right now. Pressure is force exerted by molecules bouncing off container. A change in pressure at any point in a confined fluid is transmitted everywhere in the fluid. Without gravity, pressure of a confined fluid is the same everywhere. With gravity: p = patm + pgh: gravity/weight affects pressure. P = p initial + pgd: density p = m/v, pressure of a fluid is everywhere the same at the same depth in general, in a confined fluid, change in pressure is everywhere the same. Barometer: a way to measure atmospheric pressure: for non-moving fluids, pressure depends only on depth. No, can only life the liquid a limited height, no matter how hard you suck the straw.
