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.
All sleds must fit international specifications. The maximum length for two-man sleds, sometimes called boblets, is 2.7 m (8 ft 10 in). Four-man sleds can be 3.8 m (12 ft 6 in) long. Maximum weights, including crew, are 390 kg (860 lb) for two-man sleds and 630 kg (1389 lb) for four-man sleds. The sled slides on four runners, two on the front axle and two on the rear.