Terminal velocity in the presence of buoyancy force Settling velocity W s of a sand grain (diameter d, density 2650 kg/m 3) in water at 20 Â°C, computed with the formula of Soulsby (1997). When the buoyancy effects are taken into account, an object falling through a fluid under its own weight can reach a terminal velocity (settling velocity) if the net force acting on the object becomes zero.
Definition of poorâmouth. 1  intransitive verb. : 2  to plead poverty as a defense or excuse. 3  transitive verb. : 4  to speak disparagingly of.
Burning mouth syndrome (BMS) is a burning sensation in the mouth with no underlying dental or medical cause. No signs of disease are found in the mouth. People with burning mouth syndrome may also have a dry mouth sensation where no cause can be found such as reduced salivary flow, tingling in the mouth, or an altered taste or smell.