(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.
In general, a siphon works because of gravity pull and the push of atmospheric pressure. Higher air pressure at one end of the tube pushes liquid to a lower elevation. This process continues till air pressure difference is maintained. A vacuum is devoid of any atmospheric pressure.