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The pascal ( symbol: Pa ) is the SI derived unit of pressure, internal pressure, stress, Young's modulus and tensile strength, named after the French mathematician, physicist, inventor, writer, and philosopher Blaise Pascal.
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pascal and symbol
The SI unit of pressure is the pascal ( symbol: Pa ), defined as one newton per square metre.
This symbol coincides with that for the pascal without a multiplier prefix, though both are infrequently used and context will normally be sufficient to distinguish time from pressure values.
The SI unit for sound pressure p is the pascal ( symbol: Pa ).
pascal and Pa
where N is the newton, m is the metre, kg is the kilogramme, s is the second, Pa is the pascal, and W is the watt.
The SI unit for pressure is the pascal ( Pa ), equal to one newton per square metre ( N · m < sup >− 2 </ sup > or kg · m < sup >− 1 </ sup >· s < sup >− 2 </ sup >).
File: Blaise pascal. jpg | Blaise Pascal ( 1623-1662 ): experimented with fluids, formulated Pascal's law in the 1650s stating that the pressure applied to a fluid taken in a closed container is transmitted with equal force throughout the container, proved that air has weight and that air pressure can produce a vacuum, namesake of the unit of pressure: the pascal ( Pa )
While pressure may be measured in any unit of force divided by any unit of area, the SI unit of pressure ( the newton per square metre ) is called the pascal ( Pa ) after the seventeenth-century philosopher and scientist Blaise Pascal.
The SI unit for pressure is the pascal ( Pa ), equal to one newton per square meter ( N / m < sup > 2 </ sup > or kg · m < sup >− 1 </ sup >· s < sup >− 2 </ sup >).
The International System of Units ( SI ) recognizes pressure as a derived unit with the dimension of force per area and designates the pascal ( Pa ) as its standard unit.
Common multiple units of the pascal are the hectopascal ( 1 hPa ≡ 100 Pa ), kilopascal ( 1 kPa ≡ 1000 Pa ), and megapascal ( 1 MPa ≡ 1, 000, 000 Pa ).
The pascal ( Pa ) or kilopascal ( kPa ) as a unit of pressure measurement is widely used throughout the world and has largely replaced the pounds per square inch ( psi ) unit, except in some countries that still use the Imperial measurement system.
The SI unit of modulus of elasticity ( E, or less commonly Y ) is the pascal ( Pa or N / m² or m < sup >− 1 </ sup >· kg · s < sup >− 2 </ sup >).
In the SI system, the unit is the pascal ( Pa ) ( or a multiple thereof, often megapascals ( MPa ), using the mega-prefix ); or, equivalently to pascals, newtons per square metre ( N / m² ).
In general, the SI unit of stress is the pascal, where 1 Pa = 1 N / m².
The threshold of hearing is generally reported as the RMS sound pressure of 20 µPa ( micropascals ) = 2 × 10 < sup >− 5 </ sup > pascal ( Pa ).
: The sensitivity of a microphone is usually expressed as the sound field strength in decibels ( dB ) relative to 1 V / Pa ( Pa = N / m < sup > 2 </ sup >) or as the transfer factor in millivolts per pascal ( mV / Pa ) into an open circuit or into a 1 kilohm load.
The analogous unit in the International System of Units is the pascal second ( Pa · s ):
:≡ 101325 pascal ( Pa ) or 1013. 25 hectopascal ( hPa )
Units for measuring vascular resistance are dyn · s · cm < sup >− 5 </ sup >, pascal seconds per cubic metre ( Pa · s / m³ ) or, for ease of deriving it by pressure ( measured in mmHg ) and cardiac output ( measured in l / min ), it can be given in mmHg · min / l.
Shear modulus ' derived SI unit is the pascal ( Pa ), although it is usually expressed in gigapascals ( GPa ) or in thousands of pounds per square inch ( kpsi ).
pascal and is
Thus, for example, the CGS unit of pressure, barye, is related to the CGS base units of length, mass, and time in the same way as the SI unit of pressure, pascal, is related to the SI base units of length, mass, and time:
The typical atmospheric pressure at the top of Olympus Mons is 72 pascal, about 12 % of the average Martian surface pressure of 600 pascal.
One pascal is one newton per square meter ( N · m < sup >− 2 </ sup > or kg · m < sup >− 1 </ sup >· s < sup >− 2 </ sup >).
A pascal is a newton per square meter.
where P is the absolute pressure of the gas measured in Pascals ; V is the volume ( in this equation the volume is expressed in meters cubed as pascal times cubic meter equals one Joule ); N is the number of particles in the gas ; k is Boltzmann's constant relating temperature and energy ; and T is the absolute temperature.
pascal and SI
The pascal can be expressed using SI derived units, or alternatively solely SI base units, as:
The name pascal was adopted for the SI unit newton per square metre by the 14th CGPM in 1971.
The pascal is also equivalent to the SI unit of energy density, J / m < sup > 3 </ sup >.
* Decipascal ( dPa ), an SI unit equivalent to one tenth of a pascal
* p is pressure ( SI unit: pascal )
The bar is defined using the SI unit pascal, namely: ≡.
In SI units, torque density is expressed in joules per cubic metre or equivalently newton-metres per cubic metre ( though dimensionally equivalent to the pascal, that is usually not used for this purpose ).
In SI units, the unit is converted to the SI derived unit pascal ( Pa ), which is defined as one newton per square meter ( N / m < sup > 2 </ sup >).
pascal and pressure
Moreover, in general ultra high vacuum, in the range of 10 < sup >− 7 </ sup > pascal pressure or better, is necessary to reduce surface contamination by residual gas, by reducing the number of molecules reaching the sample over a given time period.
pascal and Pascal
A 500-new franc note is also introduced in 1960 representing Molière, replaced in 1969 by the yellow Pascal type ( colloquially called a pascal ).
pascal and .
This allows the general behaviour of old style pascal strings to be preserved whilst eliminating the cost of copying the string on every assignment.
A mirepoix ( ; ) can be a combination of celery ( either common pascal celery or celeriac ), onions, and carrots.
The atmospheric pressure at the summit of Ascraeus Mons averages 100 pascal ( 1. 0 mbar ); this is only 17 % of the average surface pressure of 600 pascal.
symbol and Pa
Protactinium ( ) is a chemical element with the symbol Pa and atomic number 91.
symbol and is
The magic circle is, in fact, a symbol of and preparation for the metaphysical orgasm ''.
Accordingly, it is the aim of this essay to advance a new theory of imitation ( which I shall call mimesis in order to distinguish it from earlier theories of imitation ) and a new theory of invention ( which I shall call symbol for reasons to be stated hereafter ).
Whatever the psychological truth in the Oedipus myth, an Oedipus who is drawn to his fate by irresistible external forces can carry the symbol of humanity and its archaic crime, and the incest that is unknowing renews the mystery of the eternal dream of childhood and absorbs us in the secret.
We know that much is made of the multiplicity and ambiguity of the identities that cluster around the key symbol of the Jew.
The formal position of Americans who identify themselves with one or more of the several identities of the Jewish symbol is already clear ; ;
The symposium provides an opportunity to confront the self with specific statements which were made at particular times by identifiable communicators who were addressing definite audiences -- and throughout several hundred pages everyone is talking about the same key symbol of identification.
More than that, Sam Rayburn is the very living symbol of an iron-clad integrity so powerful in his nature and so constantly demonstrated that he can count some of his best friends in the opposition.
The symbol for division is a straight line that separates two numbers placed one above the other.
The symbol for multiplication is `` **b ''.
The symbol for subtraction is the standard minus sign.
The number on the right of the symbol is always subtracted from the number on the left of the symbol.
Addition is indicated by the + symbol.
The symbol is used to separate two or more numbers.
To simplify the formulas a representative symbol is substituted for each of the factors.
That he mastered every aspect of his medium according to his own great talents and contemporary judgments, is a good and solid symbol of his people under the tremendous pressures of proclaiming and practising the rigors of a new culture ; ;
The order of this congruence is Af, since Af secants of a curve of symbol ( B ) on a quadric surface pass through an arbitrary point.
This curve is of symbol Af since it meets **yl, and hence every line of Af in the Af invariant points on **yl and since it obviously meets every line of Af in a single point.
He often spoke of them as his `` ecumenical '' glasses and used them as a symbol of the kind of vision that is required in the church.
His reference to ' discredited carcass ' or ' tattered remains ' of the president's leadership is an insult to the man who led our forces to victory in the greatest war in all history, to the man who was twice elected overwhelmingly by the American people as president of the United States, and who has been the symbol to the world of the peace-loving intentions of the free nations.
To appreciate the nature of the gamble, it should be realized that while college teaching is almost a public symbol of security, that security does not come as quickly or as automatically as it does in an elementary school system or in the Civil Service.
The biblical symbol for this affirmation is expressed in the words: `` So God created man in his own image ; ;
His addle-brained knight-errant, self-appointed to the ridiculous position in an age when armor had already been relegated to museums and the chivalrous code of knight-errantry had become a joke, is, as Cervantes no doubt intended, a gaunt but gracious symbol of good, moving soberly and sincerely in a world of cynics, hypocrites and rogues.
An alkyl group, generally abbreviated with the symbol R, is a functional group or side-chain that, like an alkane, consists solely of single-bonded carbon and hydrogen atoms, for example a methyl or ethyl group.
1.442 seconds.