Moreover, pressure does not have to be measured along the wall of a container but rather can be measured as the force per unit area along any plane. Air pressure, for example, is a function of the weight of the air pushing down on Earth. Thus, as the altitude increases, pressure decreases.
physical features. The American Bobtail is a powerful and heavy cat with strong bones and muscles. Its medium-length legs complement the torso displaying powerful muscles and strong bones. The tail, which differentiates it from other breeds, is short-being between 2.5 cm to 10 cm (1 inch - 4 inches) in length. The tail should be flexible and can be slightly curled or even 'knotted'. Despite the length, this little tail has a good plume and long, shaggy, thick hair covers the tail.
This is a moderately-sized quail and is the only small galliform native to eastern North America. The bobwhite can range from 24 to 28 cm (9.4 to 11.0 in) in length with a 33 to 38 cm (13 to 15 in) wingspan. As indicated by body mass, weights increase in birds found further north, as corresponds to Bergmann's rule.