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The MPA was founded as the Motion Picture Producers and Distributors of America (MPPDA) in 1922 as a trade association of member motion picture companies. At its founding, MPPDA member companies produced approximately 70 to 80 percent of the films made in the United States. [4]
In 2013, the MPA ratings were visually redesigned, with the rating displayed on a left panel and the name of the rating shown above it. A larger panel on the right provides a more detailed description of the film's content and an explanation of the rating level is placed on a horizontal bar at the bottom of the rating.
0.8–2 MPa 120–290 psi Pressure used in boilers of steam locomotives [citation needed] 1.1 MPa 162 psi Pressure of an average human bite [citation needed] 2.8–8.3 MPa 400–1,200 psi Pressure of carbon dioxide propellant in a paintball gun [64] 5 MPa 700 psi Water pressure of the output of a coin-operated car wash spray nozzle [58] 5 MPa ...
number symbol name Mohs hardness [1] ... (MPa) [1] Brinell hardness (MPa) [1] Brinell hardness (MPa) [note 1] [2] 3: Li: lithium: 0.6: 5: 4: Be: beryllium: 5.5: 1670: ...
mPa 10 5 Pa bar (non-SI unit) bar 10 6 Pa megapascal MPa 10 −6 Pa micropascal μPa 10 9 Pa gigapascal GPa 10 −9 Pa nanopascal nPa 10 12 Pa terapascal TPa 10 −12 Pa picopascal pPa 10 15 Pa petapascal PPa 10 −15 Pa femtopascal fPa 10 18 Pa exapascal EPa 10 −18 Pa attopascal aPa 10 21 Pa zettapascal ZPa 10 −21 Pa zeptopascal zPa 10 24 ...
The barye (Ba) is a unit of pressure equal to 1 dyn⋅cm −2 (100 mPa). ... The number metric (Nm) is equal to 1000 metres per kilogram (1 km/kg). Pressure.
To convert the Vickers hardness number to SI units the hardness number in kilograms-force per square millimeter (kgf/mm 2) has to be multiplied with the standard gravity, , to get the hardness in MPa (N/mm 2) and furthermore divided by 1000 to get the hardness in GPa.
Given the non-exact nature of the use of δ, it is often sufficient to say that the number in MPa 1/2 is about twice the number in cal 1/2 cm −3/2. Where the units are not given, for example, in older books, it is usually safe to assume the non-SI unit.