Everyday Science Exercise 11 ( Unit Of Measurement )

Everyday Science Exercise 11 ( Unit Of Measurement )

• 1 horse power is 745.7 watts
• 1 horse power = work equal to lifting 550 lbs of weight to one foot for one second
• 1 calorie is equal to 4.2 Joules
• 1 barrel is equal to 159 liters
• 6 feet = 1 fathom
• 1 kwh = 3.6 x 10 power 6 joules
• A 100 watt bulb lights for 1 hour uses 100 watt hour of electricity
• -273 degree centigrade is called absolute zero temperature.
• Standard pressure is 760 mm or 14.7 lb/in2
• Gross is equal to 12 dozens
• Mach 2 = 500 miles per hour
• 1 nautical mile = 1825 meters
• Unit of pressure is Pascal
• Force is measured in Newton (SI), Dyne (CGS)
• At -40 deg F Fahrenheit scale is equal to centigrade scale
• Hertz and Angstrom are units of frequency
• Units of work and energy are Joule and Erg (CGS)
• Diopter is unit of power of lens
• Unit is density is kg/m3
• Unit of power is watt, BTU (Board of Trade Unit)
• Unit of electric charge is Coulomb
• Unit of voltage is volt
• Unit of electric resistance is ohm
• Unit of capacitance is Farad
• Unit of magnetic flux is Weber, Tesla
• Unit of radio activity is Becquerel
• Unit of luminous intensity is candle, lux
• Unit of crude oil is Barrel
• Unit of volume of water is cusec, cubic/sec
• Unit of admittance is Mho
• Unit of intensity or loudness of sound is bel
• Unit of viscosity is Poise
• Unit of flight speed is Mach I
• Unit of atmospheric pressure is milli bar
• Unit of wave length of light is Angstrom
• Unit of energy is Electron volt
• Unit of brightness is Lambert
• Unit of luminous flux is Lumen
• Intensity of illumination or unit of luminosity is Lux, Candela and Candle power
• Unit of magnetic pole strength is Weber
• Unit of RAD (Radiation Absorbed Dose) is Gray
• Unit of Electric Current is Ampere
• Unit of inductance is Henry
• Unit of conductance is siemens.
• Unit of heat is Joule, Calorie, BTU (British Thermal Unit)
• Radio activity is measured in currie
• Rutherford : strength of radioactivity
• Torr: pressure
• Fermi : length [A unit of length equal to one femtometer (10-15 meter)]
• Sved berg unit:sedimentation rate
• Dioptre: power of lense
• Mho : conductivity
• Henry: inductance
• Maxwell: magnetic flux
• Becquerel: radioactivity