If a body whose mass is m grammes be moving with a velocity of v centimetres per second relative to the earth, the available kinetic energy possessed by the system is Zmv 2 ergs if m be small relative to the earth.
Printed matter is 2c. (Id.) per 50 grammes (s3/4 oz.).
There is no Uruguayan gold coin in circulation, but the theoretical monetary unit is the gold peso national, weighing 1.697 grammes, .917 fine.
The silver peso weighs 25 grammes, .900 fine.
The chemical symbols stand for quantities measured in grammes, and heat-evolution is reckoned as positive, heat-absorption as negative.