A rainbow of mucus and phlegm. As far as color goes, mucus is typically clear. But when the immune system sends white blood cells into the nose to fight off infection, they contain a greenish enzyme that shades the substance yellow or green.These are the same tones mucus takes on when it dries and clumps into boogers.s far as color goes, mucus is typically clear. But when the immune system sends white blood cells into the nose to fight off infection, they contain a greenish enzyme that shades the substance yellow or green. These are the same tones mucus takes on when it dries and clumps into boogers.
#3. Sandy_221. I think if the object that is acted upon is on the the X-Y plane, for example, then an applied force can't be considered a normal force if the former is in the same plane as the latter. In order for an applied force to be a normal force it has to be on the Z plane. Is this right? What do you think, guys?
Buoyant force refers to the amount of pressure exerted on a particular object when placed on some kind of fluid.In scientific terms, fluids may either be liquid or gas. This concept is based on the Archimedes principle that the force acting on an object in a liquid is equal to the weight of the displaced fluid.his explains why the buoyant force or pressure at the bottom of a particular object is greater than the force on top. And regardless of the objectâs weight or density, whether it floats or sinks, some buoyant force is still present.