(4) The victim is at least 13 but less than 16 years old and the actor is at least four years older than the victim. Sexual assault is a crime of the second degree. Amended amended 1979, c.178, s.26; 1983, c.249, s.2; 1989, c.228, s.3; 1997, c.194, s.1.
Quick Answer. Pressure is exerted by fluids because of their weight. According to Georgia State University, static fluid pressure is exerted by the depth of the fluid, the density of the fluid and the acceleration of gravity.
All fluids are compressible to some extent; that is, changes in pressure or temperature cause changes in density. However, in many situations the changes in pressure and temperature are sufficiently small that the changes in density are negligible. In this case the flow can be modelled as an incompressible flow.