The letter J in science stands for joules.
joules
The abbreviation of units is usually written with a capital letter, if it is based on the name of a person.
The abbreviation for Joules is a capital letter J. A Joule is a unit of energy equal to the work done by applying the force of one newton through a distance of one meter toward the action of the force. Joules are most often seen when discussing things like Physics.
As far as I remember from my physics it is "J" for Joules - that is the so called S.I. international unit used by physicists the world over (capital J that is) - so 10 Joules is denoted as 10J - hope this helps.
the units for gravitational potential energy is joules (j)
j
Heat is measured in joules.
Ljubljana (pronounce the letter j as a y)
US Capital Cities that start with the letter "J"Juneau, AlaskaJefferson City, MissouriJackson, Mississippi
joules (J)
joules (J)