what is one measure of pressure?
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Atmosphere\nPascal\nBar\nlbs/cm^2
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1. concentration and pressure\n2. see sources
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Standard sea level barometric pressure is 1013 Millibars. When the needle goes above this, it indicates a High pressure. When the needle drops below, it indicates Low pressure.\nGo to a weather page like http://www.wunderground.com/global/CI_Index.html\nIt will tell you the pressure.
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Gage pressure just means the pressure relative to atmospheric (atmospheric tempertaure ~= 101 kPa)\n\nSo answer is 550.280 - 101 ~= 448.995 kPa\n\nAnswer C.
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Pascal's principle : Pressure applied to an enclosed fluid is transmitted undiminished to every part of the fluid, as well as to the walls of the container.  \nAn example: hydraulic lift.
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Physics, major science dealing with the fundamental constituents of the universe, the forces they exert on one another, and the effects of these forces. \n\nMeasurement, finding the size or amount of some quantity, and expressing it as a number of defined units.All measurement is based on a comparison. In general, the thing to be measured is compared with something that has already been calibrated, or measured against a known reference. However, a measurement is not complete unless it includes a statement of its uncertainty, or the confidence one can have in it.\nUnits of Weight and Measurement\nImperial System\nAMOUNT NAME \nAngular or Circular Measure \n60 seconds = 1 minute (min) \n60 minutes = 1 degree \n30 degrees = 1 zodiac sign \n57.2958 degrees = 1 radian \n90 degrees = 1 quadrant or right angle \n360 degrees = 1 circle \nCubic Measure (Volume) \n1,728 cubic inches (cu in) = 1 cubic foot (cu ft) \n27 cubic feet = 1 cubic yard (cu yd) \n231 cubic inches = 1 US gallon (gal) \n277.27 cubic inches = 1 British imperial gallon (i gal) \n2,150.42 cubic inches = 1 US bushel (bu) \n2,219.36 cubic inches = 1 British imperial bushel (i bu) \nDry Measure (Capacity) \n2 pints = 1 quart \n8 quarts = 1 peck (pk) \n4 pecks = 1 bushel \nLinear Measure (Length) \n1,000 mils = 1 inch (in) \n12 inches = 1 foot (ft) \n3 feet = 1 yard (yd) \n5.5 yards = 1 rod (rd) \n40 rods = 1 furlong (fur) \n8 furlongs = 1 mile (mi) \n5,280 feet = 1 mile \n3 miles = 1 league (l) \nLiquid Measure (Capacity) \n4 fluid ounces (fl oz) = 1 gill (gi) \n4 gills = 1 pint (pt) \n2 pints = 1 quart (qt) \n4 quarts = 1 gallon (gal) \nMariners’ Measure \n6 feet = 1 fathom (fath) \n120 fathoms = 1 cable’s length (US Navy) \n1,852 metres = 1 nautical mile (n mi) \n1 nautical mile per hour (n mph) = 1 knot (k) \nPaper Measure \n25 sheets = 1 quire (qr) \n20 quires = 1 standard ream (rm) \n516 sheets = 1 printers’ ream \n2 reams = 1 bundle (bdl) \n4 bundles = 1 case (c) \nPrinters’ Measure (Typography) \n0.013837 inches = 1 point \n12 points = 1 pica \nSquare Measure (Area) \n144 square inches (sq in) = 1 square foot (sq ft) \n9 square feet = 1 square yard (sq yd) \n30.25 square yards = 1 square rod (sq rd) \n160 square rods = 1 acre \n640 acres = 1 square mile (sq mi) \nSurveyors’ Measure \n7.92 inches = 1 link (li) \n66 feet = 1 chain \n80 chains = 1 mile \nWood Measure \n144 cubic inches (1' x 1' x 1'') = 1 board foot (bd ft) \n16 cubic feet (4' x 4' x 1') = 1 cord foot (cd ft) \n8 cord feet = 1 cord (cd) \nWEIGHTS \nWeight (Apothecaries’) \n20 grains = 1 scruple (s ap) \n3 scruples = 1 dram (dr ap) \n8 drams = 1 ounce (oz ap) \n12 ounces = 1 pound (lb ap) \nWeight (Avoirdupois) \n27.3438 grains = 1 dram (dr) \n16 drams = 1 ounce (oz) \n16 ounces = 1 pound (lb) \n14 pounds = 1 stone \n100 pounds = 1 hundredweight (cwt) \n8 stones = 1 long hundredweight \n(l cwt) \n2,000 pounds = 1 short ton (ST) \n2,240 pounds = 1 long ton (LT) or 20 (l cwt) \nWeight (Troy) \n24 grains = 1 pennyweight (dwt) \n20 pennyweights = 1 ounce (oz t) \n12 ounces = 1 pound (lb t) \n\nMiscellaneous Units\nWEIGHT/MEASURE UNITS \nAbsolute zero = -273.15o C (-459.67o F) \n1 atmosphere = 760 mm of mercury \n1 cup = 10 fluid ounces \n1 carat (international) = 200 milligrams (gem weight) \n1 megaton = 1,000,000 tons \n3 teaspoons = 1 tablespoon \n1 angstrom unit = 0.1 nanometre \n1 bolt of cloth = 40 yards \n1 gross = 12 dozen, or 144 \n1 light-year = 9.46 x 1012 km \n(5.88 x 1012 mi) \n1 tablespoon = 1/2 fluid ounce
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High Pressure: "A mass of air that presses down strongly on the surface of the Earth because it is being cooled and is therefore more dense."  High pressure systems are characterized by fair weather, cooler temperatures (generally speaking -- though there are exceptions, see Santa Ana conditions in Southern California), and lower humidity.\n\nLow Pressure: "A mass of air that presses down only weakly on the surface [or rises from the surface] of the Earth because it is being warmed and [is] . . . less dense."  Low pressure systems are characterized by higher humidity, warmer temperatures, and more precipitation.
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MASS / VOLUME\n that's way you measure it in g/mL
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Pressure, volume/specific volume, temperature, entropy, enthalpy, specific heat, atomic weight, and thats all I can think of off the top of my head
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C: Barometer\n\n(  "A barometer is an instrument used to measure atmospheric pressure." http://en.wikipedia.org/wiki/Barometer  )
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mass * gravity / area\n\n79.5 * 9.81 / (2 * 0.018) = average pressure\n\nunits:\n\nkg * (m/s^2) / (m^2) = N/m^2 = Pa (Pascals)
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Newtons is the unit for measure of force
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Pressure is nothing but a force applied onto an area. Pressure in air filled balloon, for example,  is due to "concurrent forces" created by compressed air pushing outward from the center on the balloon. These forces are equal in strength that at the center they clear each other. Thus at the center the pressure is a nonsatble 0.
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It is of a pressure equal to 0.6 ­ 1.1 atmosphere (600 ­ 1100 g/cm 2 ) at sea level (8.5 lbs/sq in 15.6 lbs/sq in)
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A device for passing measured amount of gas or compressed air under constant pressure through gas meters to test accuracy of meters.\n\nkindly check below websites also :)
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Look at fig.1 on the link below. This is a very useful chart which will give you a thorough knowledge about the test pressure. This website will also give you a good conception about the test procedures. \n\nFor one line answer: \nTest pressure is 1.5 times or 150% of the MAWP (Maximum Allowable Working Pressure) and not the MOP (Maximum Operating Pressure). \n\nWell, I have completed a year-long project on pressure vessel just a month ago. So I could provide you this link so easily. Let me know whether the answer was helpful.
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force is the total amount of force exerted... pressure is the amount of force exerted over a specific area. the formula is P=F/A the units are expressed in Newtens per meters squared N/m^2