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Yes, it is true. Hoped that helped.
You must mean a can that you can heat when open and seal air tight when you let it cool. When you heat it the air inside is heated and expands; so the molecules spread out (less molecules=less air). When the can is sealed and cooled, the molecules move together and that creates a vacuum relative to the outside air pressure, and that pressure crushes the can.
Short answer:A vacuum is actually a description of very low pressure.Long answer:This question really depends on the case. For this answer I'll be referring to an air cylinder like in a paintball gun or so on. Air pressure is the pressure or force a gas exerts on an object. For example atmospheric air pressure is the weight of all the air in the atmosphere above you pushing down on you. Or in the case of a cylinder pressure is the force of the molecules and atoms of air bumping into the wall of the cylinder. the more collisions with the walls the higher the pressure. Adding more air means more atoms to bump around and more pressure. As you start to remove the atoms and molecules from the cylinder there are less and less to bump into the walls. Thus lowering the pressure of the cyclical. A vacuum is reached when there are little to no more molecules or atoms bouncing around inside the tube. Therefore a vacuum is actually a description of very low pressure.
Vacuum refers to a volume of space that is essentially empty of matter,such that is gaseous pressure is much less than atmospheric pressure. while AIR is the mixture of oxygen, nitrogen,and other gases that are consistently present around us.
so that alpha not diverted from its path by molecules in air.
Yes, it is true. Hoped that helped.
Gas pressure is caused by the molecules of gas striking the walls of a container, or in the case of Earth's atmosphere, the molecules of air hitting the earth. In a vacuum, there are no gas molecules. No molecules, no pressure.
You must mean a can that you can heat when open and seal air tight when you let it cool. When you heat it the air inside is heated and expands; so the molecules spread out (less molecules=less air). When the can is sealed and cooled, the molecules move together and that creates a vacuum relative to the outside air pressure, and that pressure crushes the can.
What we hear as sound is caused by pressure waves in the air which make small hairs deep inside our ears vibrate. Since there is no air or anything at all inside of a vacuum, there are no molecules to bump into each other to transfer the pressure wave through space.
By expanding them, you create a vacuum inside them; given a portal (your mouth, nose), the vacuum will pull the ambient air in, just as a vacuum cleaner pulls things inside by creating a vacuum.
there is vacuum inside the air bubble. since air bubles are formed on the principle of marangoni's Theorem ( surface tension), the water molecules aquire the spherical shape of the bubbles quickly, leaving no air inside the bubble..... the air bubbles or the soap bubbles are used to solve many space and gravity related problems... i hope i have provided u with the correct solution....
By getting the air inside to leak out.
Space and the inside of a vacuum.
Sound cannot travel through a vacumNo. Sound waves can not travel in a vacuum. Sound works by having molecules of air knock against other molecules of air. Then those molecules knock against other molecules. The energy is transferred from one molecule to the next. These molecules we hear transferring energy from one to another we hear as sound. Where molecules can not transfer energy to another molecule, such as in a vacuum, sound can not exist.
Short answer:A vacuum is actually a description of very low pressure.Long answer:This question really depends on the case. For this answer I'll be referring to an air cylinder like in a paintball gun or so on. Air pressure is the pressure or force a gas exerts on an object. For example atmospheric air pressure is the weight of all the air in the atmosphere above you pushing down on you. Or in the case of a cylinder pressure is the force of the molecules and atoms of air bumping into the wall of the cylinder. the more collisions with the walls the higher the pressure. Adding more air means more atoms to bump around and more pressure. As you start to remove the atoms and molecules from the cylinder there are less and less to bump into the walls. Thus lowering the pressure of the cyclical. A vacuum is reached when there are little to no more molecules or atoms bouncing around inside the tube. Therefore a vacuum is actually a description of very low pressure.
Vacuum refers to a volume of space that is essentially empty of matter,such that is gaseous pressure is much less than atmospheric pressure. while AIR is the mixture of oxygen, nitrogen,and other gases that are consistently present around us.
Something that has no air. Like the vacuum you have in your closet. It sucks air in because it is trying to fill the empty cavity that it has inside is. Space is a vacuum because their is no air in Space. If you take your helmet off in Space you will die instantly because you have air and the vacuum around you is MUCH MORE POWERFUL!