How does fluids exert pressure

The gas particles have very weak attractive force between them, and move randomly ultimately exert pressure in all direction. Their molecules are bouncing all around the container because they are so small, then gravity has very little effect on them. Do gases have mass? Tell students that gases are made of molecules but that the molecules are much further apart than the molecules in liquids or solids.

Since the molecules of a gas have mass and take up space, gas is matter. Students may have difficulty imagining that gases have mass. What does Boyle's law state? Relation with kinetic theory and ideal gases Boyle's law states that at constant temperature the volume of a given mass of a dry gas is inversely proportional to its pressure.

Why is water liquid at room temperature? At room temperature anywhere from zero degree centigrade to degrees centigrade , water is found in a liquid state. This is because of the tiny, weak hydrogen bonds which, in their billions, hold water molecules together for small fractions of a second. Water molecules are constantly on the move. How do the gas particles produce a pressure on the walls of the spray can? The particles in a gas are all moving about randomly. As they move around, they collide with the walls of their container.

Each collision produces a tiny force on the wall, trying to push it outwards. The video depicts a simulation of extremely low temperature liquid Argon, which is a gas at room temperatures. Notice that the motion of the blue ball, which is a specific atom that has been highlighted, shows how random and "bumpy" the liquid motion is.

The pressure on the walls of a container results from the same random jostling of the fluid particles that cause the blue atom to move around in the video. An object placed in a liquid will begin to sink. As it sinks, the liquid pressure on it increases and so the upthrust increases. An object will continue to sink if its weight is greater than the maximum upthrust.

Bang Goes the Theory presenter Dallas takes part in a free-diving challenge in a 30m deep water chamber. Pressure in fluids Liquids and gases are fluids.

Atmospheric pressure The atmosphere exerts a pressure on you, and everything around you. Improve this question. BoddTaxter BoddTaxter 2, 2 2 gold badges 21 21 silver badges 35 35 bronze badges. Add a comment. Active Oldest Votes. Improve this answer. Arty Arty 45 3 3 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.

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