joules
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 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.
The abbreviation of units is usually written with a capital letter, if it is based on the name of a person.
j
To convert from Joules per square centimeter (J/cm^2) to Joules (J), you would need to multiply the value in J/cm^2 by the area over which the energy is distributed in square centimeters. This will give you the total energy in Joules.
In science, the letter "j" does not typically represent a specific element or concept. It is simply part of the alphabet used to represent variables, quantities, or labels in equations, formulas, and scientific notation.
US Capital Cities that start with the letter "J"Juneau, AlaskaJefferson City, MissouriJackson, Mississippi
Ljubljana (pronounce the letter j as a y)
C. 2485664 J. 1 Btu is equivalent to 1055.06 joules, so to convert 1152 Btu to joules, you would multiply 1152 by 1055.06 to get 1,215,360 J.
joules (J)
Joules (J) or kilocalories (cal) (kcal in Europe)