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Can the ozone hole be reduced?
yes, by using less air-cond
What does a mercury barometer measure and how does it work?
A mercury barometer measures atmospheric pressure, which is the weight of the air pressing down on Earth's surface. It works by using a column of mercury in a sealed tube to balance the pressure of the air outside. When the air pressure increases, the mercury in the tube rises, and when the air pressure decreases, the mercury falls.
How a dropping tube uses air pressure?
A dropping tube uses air pressure by creating a pressure difference between the inside and outside of the tube. When the tube is sealed at the top and the bottom is opened, the pressure inside the tube decreases as the air escapes, causing the liquid to be "dropped" into a container below.
Which instrument measures the air pressure using a metal chamber from which some air has been removed?
A barometer measures air pressure using a metal chamber from which some air has been removed. The most common type is the mercury barometer, where the air pressure pushes down on a pool of mercury in a glass tube to indicate atmospheric pressure.
Where is air cond orfice on 94 Chevy 1500?
On a '94 Chevy 1500, the air conditioning orifice tube is located to the posterior of the right turn signal. It can be accessed by removing the grill.
Why the mercury can not rise in a lab thermometer if there is air in the glass tube?
Mercury does not rise in a lab thermometer if there is air in the glass tube because the presence of air creates pressure within the tube that opposes the expansion of the mercury. Without a vacuum, the air pressure prevents the mercury from moving freely up the tube in response to changes in temperature.
A tube contains enclosed air by a thread of mercury of 250 mm long when tube is horizontal the length of air is 250 mm long what is the pressure on the air column when atmospheric pressure is 750 mmhg?
A tube contains enclosed air by a thread of mercury of 250mm long when tube is horizontal the length of air is 250 mm long. The pressure on the air column when atmospheric pressure is 750 mm Hg is 3 Pascal or 3 N / m2.
How is the air pressure equalized in the ear?
Eustachian tube.
What causes high head pressure and normal suction pressure in a air conditioner?
non condensebles in system dirty cond coil high ambient poss over charge
Why when you blow the top of the glass tube the ink will move up?
Blowing on the top of a glass tube creates a change in air pressure inside the tube. This change in pressure causes the ink to move up because it is being pushed by the higher air pressure outside the tube. This phenomenon is known as air pressure or Boyle's law in action.
What prevents mercury in the tube of a barometer from running out into the container at the bottom of the tube?
The top of a barometric tube is sealed leaving no place for air to escape. It works along the same principle as a drinking straw, but in reverse. In a drinking straw, the sucking motion reduces the pressure of the air inside the straw to a lower level than the air outside the straw. Liquid resists changes in volume due to pressure and is drawn up through the tube due to the air pressure exerted on the surface of the liquid outside the straw. In a barometric tube the tube is sealed at one end, trapping a finite amount of gas in the tube. The air pressure inside and outside the tube is equal, keeping the mercury suspended at a certain level. If the pressure outside is raised, more force is exerted on the surface of the mercury outside the tube than on the surface inside. This raises the level of the mercury in the tube until the pressure of the air is equalized -- there is still just as much air in the tube, but a smaller volume at a greater pressure.
What is the principle of pressure gauge in air conditioning laboratory unit?
Without knowledge of the pressure in the air cond. lab. unit you will not be able to calculate the mass flow. Without the mass flow you cannot do any analysis of the system.
