2006-06-23 13:28:13 · 5 answers · asked by Franco 1 in Science & Mathematics ➔ Physics
Erg or fractional Joule.
An erg is the unit of energy and mechanical work in the Centimeter-Gram-Second (CGS) system of units, symbol "erg". Its name is derived from the Greek word meaning "work".
A watt-second is a unit of energy or work in Kilogram-Meter-Second (KMS) system called Joules. Ergs are fractions of Joules.
As if you did not know.
I hope it answers your question.
2006-06-23 13:37:04 · answer #1 · answered by Edward 7 · 0⤊ 0⤋
Pascal is right.
A Watt-second is a Joule. Fractions of Joules are expressed by prefixes such as milli, micro.
Ergs belong to a completely different set of units and should not be used alongside Joules. A system of units has only ONE unit of energy.
2006-06-23 21:47:59 · answer #2 · answered by Epidavros 4 · 0⤊ 0⤋
Watt second is joule. No where I have read about fractional watt second. It may mean fraction of a joule.
2006-06-23 16:59:02 · answer #3 · answered by Pearlsawme 7 · 0⤊ 0⤋
I have never heard of 'fractional watt-seconds." However, I can tell you a watt is defined as a joule per second, so a watt-second is simply one joule of energy. (More frequently you might hear of kilowatt-hours; one kWhr is 3.6 million joules of energy.)
Again, I'm sorry I can't help with the 'fractional' label ...
2006-06-23 13:37:40 · answer #4 · answered by Steve H 5 · 0⤊ 0⤋
A watt-second is, as previously mentioned, simply a Joule. Ergs are a fraction of a Joule, but for something originally defined as such, you might try millijoule (mJ), microjoule (μJ), nanojoule (nJ), picojoule (pJ)....
2006-06-23 16:38:19 · answer #5 · answered by Pascal 7 · 0⤊ 0⤋
joules in MKS system
ergs in CGS system
2006-06-23 14:42:38 · answer #6 · answered by Anonymous · 0⤊ 0⤋