Search results
Results from the WOW.Com Content Network
The pascal (symbol: Pa) is the unit of pressure in the International System of Units (SI). ... kg is the kilogram, s is the second, and J is the joule. [9]
In SI units, the unit is converted to the SI derived unit pascal (Pa), which is defined as one newton per square metre (N/m 2). A newton is equal to 1 kg⋅m/s 2, and a kilogram-force is 9.80665 N, [3] meaning that 1 kgf/cm 2 equals 98.0665 kilopascals (kPa).
Pressure exerted by a 45 kg person wearing stiletto heels when a heel hits the floor [69] 15.5 Mpa 2,250 psi Primary coolant loop of a pressurized water reactor: 20 MPa 2,900 psi Typical pressure used for hydrogenolysis reactions [70] 21 MPa 3,000 psi Pressure of a typical aluminium scuba tank of pressurized air (210 bar) [71] 21 MPa 3,000 psi
The pascaline (also known as the arithmetic machine or Pascal's calculator) is a mechanical calculator invented by Blaise Pascal in 1642. Pascal was led to develop a calculator by the laborious arithmetical calculations required by his father's work as the supervisor of taxes in Rouen , France. [ 2 ]
Pressure is measured in the SI unit of pascals (Pa). Average ground pressure can be calculated using the standard formula for average pressure: P = F/A. [2] In an idealised case, i.e. a static, uniform net force normal to level ground, this is simply the object's weight divided by contact area.
Help; Learn to edit; Community portal; Recent changes; Upload file; Special pages
Two decades after Schickard, in 1642, Blaise Pascal invented another mechanical calculator with better (but still not perfect) tens-carry. [2] Co-opted into his father's labour as tax collector in Rouen, Pascal designed the calculator to help in the large amount of tedious arithmetic required; [3] it was called Pascal's Calculator or Pascaline. [4]
The kinetic energy of a 2 kg mass travelling at 1 m/s, or a 1 kg mass travelling at 1.41 m/s. The energy required to lift an apple up 1 m, assuming the apple has a mass of 101.97 g. The heat required to raise the temperature of 0.239 g of water from 0 °C to 1 °C. [16] The kinetic energy of a 50 kg human moving very slowly (0.2 m/s or 0.72 km/h).