Not very much at all. When the "start" of the water flow hits the end point it will be very low; but the weight if the water itsself will be very high.
Vapor materials exert their pressure in just about every direction
athmospheric pressure
external pressure is pressure that other things exert on you
yes
idek
Pressure exerted
The fluids in your body exert pressure and prevent the atmospheric pressure from closing in. Fluids exert pressure on a container the particles collide with each other and the sides of the container.
All of the forces exerted by the individual particles in a fluid combine to make up the pressure exerted by the fluid.
The fluids in your body also exert pressure.
You have a misconception... Pressure can be definitely exerted on gas. You might have heard of air compressor? Pneumatic cylinder? these elements exert pressure on air(Gas). Free air from atmosphere is sucked inside then pressurized & used for many applications. Please go through working principles of these elements.
a. moving molecules that exert forces.
Yes.