Question

In: Chemistry

Definition of atmospheric pressure

Definition of atmospheric pressure

Solutions

Expert Solution

Atmospheric pressure, sometimes also called barometric pressure

It is the pressure exerted by the weight of air in the atmosphere of Earth.

Much of the time environmental weight is nearly approximated by the hydrostatic weight created by the heaviness of air over the estimation point.

Low-weight regions have less air mass over their area, while high-weight ranges have more environmental mass over their area.

Similarly, as height increments, there is less overlying climatic mass, so that barometrical weight diminishes with expanding rise.

All things considered, a segment of air one square centimeter [cm2] (0.16 sq in) in cross-segment, measured from ocean level to the highest point of the climate, has a mass of around 1.03 kilograms (2.3 lb) and weight of around 10.1 newtons (2.3 lbf).

That drive (crosswise over one square centimeter) is a weight of 10.1 N/cm2 or 101,000 N/m2.

A segment 1 square crawl (6.5 cm2) in cross-area would have a weight of around 14.7 lb (6.7 kg) or around 65.4 N.


Related Solutions

15 - The difference between the absolute pressure and the local atmospheric pressure is ……………. ....
15 - The difference between the absolute pressure and the local atmospheric pressure is ……………. . A) Vacuum Pressure B) Atmospheric Pressure C) Gage Pressure D) Specific Pressure E) Absolute Pressure
Briefly describe the difference between atmospheric pressure, intrapulmonary pressure, and intrapleural pressure. Which of these is...
Briefly describe the difference between atmospheric pressure, intrapulmonary pressure, and intrapleural pressure. Which of these is always negative in a healthy individual during normal breathing? What happens if intrapleural pressure becomes equal to atmospheric pressure?
Briefly differentiate between atmospheric pressure, intrapulmonary pressure, and intrapleural pressure. Which of these is always negative...
Briefly differentiate between atmospheric pressure, intrapulmonary pressure, and intrapleural pressure. Which of these is always negative in a healthy individual during normal breathing? What happens if intrapleural pressure becomes equal to atmospheric pressure? The contraction of the diaphragm and the external intercostal muscles begins inspiration. Explain exactly what happens, in terms of volume and pressure changes in the lungs, when these muscles contract. What is the functional significance of the pleural fluid during inspiration?
A compressed air nozzle has a diameter of .250in and line pressure of 109psi. Atmospheric pressure...
A compressed air nozzle has a diameter of .250in and line pressure of 109psi. Atmospheric pressure is 14.7psi. What is the mass flow rate and velocity of the nozzle? If five nozzles are attached to the same air line with 109psi, what will the mass flow rate and velocity be then? Is either flow choked?
During passive expiration, the intrapleural pressure is A greater than atmospheric pressure B the same as...
During passive expiration, the intrapleural pressure is A greater than atmospheric pressure B the same as atmospheric pressure C determined by the diaphragm D greater than the intra-alveolar pressure E lower than the intra-alveolar pressure
1) Somewhere along the flow stream in a siphon the pressure is less than atmospheric pressure....
1) Somewhere along the flow stream in a siphon the pressure is less than atmospheric pressure. True False 2)it is reasonable to expect that the top speed of the boat will approximately double if a 9 Hp boat motor is replaced with an 18 Hp boat motor, All else being equal, True False 3)In a steady-state flow, it is not possible for fluid parcels of fixed identity to accelerate. True False
1using the phrase vapor pressure and atmospheric pressure define boiling point 2does the boiling point of...
1using the phrase vapor pressure and atmospheric pressure define boiling point 2does the boiling point of a liquid increase or decrease in a vacuum and why? 3 does the boiling point of a liquid increase or decrease when it is raining outside and why can someone please help me to answer these
Perform the following pressure conversions, assuming when necessary that atmospheric pressure is 1 atm. Unless otherwise...
Perform the following pressure conversions, assuming when necessary that atmospheric pressure is 1 atm. Unless otherwise stated, the given pressures are absolute (8 points) 1) 200 mm Hg to psi 2) 275 ft H2O to kPa 3) 3.00 atm to N/cm2 4) 280 cm Hg to Dyne/m2 5) 20 cm Hg of vacuum to atm. (absolute) 6) 25.0 psig to mm Hg (gauge) 7) 25.0 psig to mm Hg (absolute) 8) 35.0 psi to cm of CCl4
The severity of a tropical storm is related to the depressed atmospheric pressure at its center....
The severity of a tropical storm is related to the depressed atmospheric pressure at its center. Shown below is a photograph of Typhoon Odessa taken from the space shuttle Discovery in August 1985, when the maximum winds of the storm were about 90 mi/hr and the pressure was 40.0 mbar lower at the center than normal atmospheric pressure. In contrast, the central pressure of Hurricane Andrew was 90.0 mbar lower than its surroundings when it hit south Florida with winds...
In a supermarket, air at atmospheric pressure and 25 °C is supplied to an air handling...
In a supermarket, air at atmospheric pressure and 25 °C is supplied to an air handling unit through a rectangular duct with a cross section of 0.5 m x 0.1 m. The air handling unit will distribute 2/3 of the air to the large shopping area of the supermarket at 25 °C, and it will cool the remaining air to -5 °C and distribute it to a walk-in refrigerator. To avoid frictional pressure losses, the average air velocity in the...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT