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Adhesion produces the effect of capillary action when a straw is placed in liquid. Capillary action is liquid's ability to flow in narrow spaces without external forces like gravity.
If you suck some air out of a straw, the remaining air in the straw will have to contract in volume in order to maintain the same pressure, which it will do because normal air pressure is still pressing on the liquid in which the straw is submerged. The contracting air will then draw up the liquid.
the air in the liquid is blocked off by your mouth when its on the straw so when u sip the flow of air and carbons bring the liquid thorugh the straw through capillary action http://www.answers.com/topic/capillary-action-1
you can sip more out of 1 straw than 2
No. The action of a drinking through a straw is that you suck the air out of the straw, and the air pressure on the outside of the cup them pushes the liquid up the straw. If there were no air pressure on the surface of the liquid, then there wouldn't be anything to cause the liquid to rise. However; 1. If there were no air pressure, the liquid would boil and vaporize; there wouldn't be any liquid to drink. 2. In weightlessness, you can't suck water through a straw even IN atmosphere; the liquid forms globules under the influence of its own surface tension. On the Space Station, the astronauts drink from sealed bulbs; sort of like juice pouches. You squeeze the pouch to push the liquid into your mouth.
What happens is that the water level will increase because of the weight of the straw and there will be also bubbles forming under the straw because of the hole in the straw....... ^__^
A McDonald's straw holds about 12528.1mm cubed liquid. I calculated the density and volume and came up with 12,528.1 milimeter cubed of liquid.
The pressure in the straw goes to negative.[We cannot have a negative pressure - this grammar form is known as an oxymoron.]A2. The pressure in the straw is reduced, and thus the liquid is able to be drawn higher in the straw.
The straw colored liquid is called the plasma.
Air pressure within the straw.
Sabotaging a StrawPutting one or more pinholes in the straw, above the level of the liquid, will allow air to enter the straw at the top, and the liquid will not rise in the straw. To use this "sabotaged straw", merely switch ends (flip it over) so that the pinholes go under the liquid.
When you suck on a straw the pressure at the top of the straw becomes lower than the pressure at the bottom, which forces liquid up.
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when you drink through a straw you remove some of the air in the straw. because there is less air the pressure of the straw is reduced. but the atmospheric pressure on the surface of the liquid remains the same. henceforth how it helps you drink
1) Air inside the straw moves 2)Pressure inside decreases 3)Pressure of the atmosphere is greater then the Pressure inside the straw=Liquid moves up the straw!!!
Mudbricks that are made without straw have a density of 1,612kg/m3 . Mudbricks made with straw are likely to be less dense than this