Hertz, which is symbolized by Hz, is SI's unit of frequency. SI is short for the International System of Units. One cycle per second is the definition given for frequency. It is normally used in the description of the sine wave, which has to do with audio and radio applications.
A joule, which is symbolized by J, refers to SI's unit of work, energy or amount of heat. One joule is equal to work done when one newton is applied over a one meter distance. It is also defined as a 1 ampere electric current that passes through a 1 ohm resistance for 1 second.Learn more about Measurements