physics key concepts

• mass measured in kg
• length measured in metres
• time measured in seconds (s) and milliseconds (ms)
• temperature is measure in Celsius or kelvins, and is a measure of the average kinetic energy of the particles in a substance
• ammount of a substance is measure in moles or grams
• newtons (N) are measured in kgm/s
• joules (J) are measured in Nm newton metres
• pascals (pa) measured in kg/m s^2
• frequency is hertz
• force is newtons
• energy is joules
• power is watts (W)
• pressure is pascals (Pa) or kilopascals (kPa)
• electric charge is couloumbs
• electric potential difference is volts
• electric resistance is ohms
• magnetic flux density is tesla
• Giga = 10^9
• mega= 10^6
• kilo= 10^3
• centimetres =10^-2
• millimetres= 10^-3
• micro = 10^-6
• nano =10^-9
• hours to seconds = x 3600
• seconds to hours= ÷ 3600
• 0 kelvin = -273.15 degrees celsius
• kelvin to Celsius =- 273.15
• celsius to kelvin =+273.15