Answer :

The kilojoule is 0.0003

  • The joules is the smallest quantity than the kilojoule.
  • when we convert the small quantity into the large quantity than we used the decimals.
  • So 3J is the small quantity and the kilojoule contains the 1000 joule.
  • 1 kilojoule contains 1000 joules.
  • if we convert this values from joule to kilojoule, the value is like this
  • 1 joule contains 0.0001 kilojoules
  • similarly,
  • 3 joule contain0.0003 kilojoules.
  • So the joule is the unit of energy (heat energy, thermal energy etc.)
  • It is defined as the Amount of energy is transferred to the object when the amount of force is used to  displace the motion.
  • the joule unit is expressed in J = kg×m²/s = Nm

When you convert the small quantity to large quantity then we always use the decimals.

Learn more about conversion quantity here

https://brainly.com/question/18559676

#SPJ9