2007-11-23 06:09:49 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Physics
It depends in what system you are using
In kg-m-s system or SI (or standard International units)
it is Joules
Energy is related to work and work is defined in force F times parallel to this force distance.
so in any system it is units of force times units of length. Be careful since Torque which is an rotational force and expressed in similarly. The are however as you know different units.
Mathematical definition
Torque=RxF (vector product)
Ebergy=F S (scalar product)
2007-11-23 06:16:13 · answer #1 · answered by Edward 7 · 0⤊ 0⤋
The Unit of the Energy phenomeon in physics is called "Joule". In honor of James Joules.
Dimensionally it has 3 components expressed as;
kg m^2 / Sec^2 which is equal the product of Power and Time.
2007-11-23 06:26:23 · answer #2 · answered by goring 6 · 0⤊ 0⤋
The metric unit of energy is the joule (abbreviated as 'J'). It is the amount of energy necessary to heat 1 gram of liquid water by 1 degree celsius.
2007-11-23 08:27:15 · answer #3 · answered by Anonymous · 0⤊ 0⤋
The unit of energy is the Joule
1 Joule is defined as:
The amount of work done by passing 1 Ampere through a resistance of 1 ohm for 1 second. (1 W*s)
The amount of work done when a force of 1 Newton acts through a distance of 1 meter. (1 N*m)
The amount of work done by moving a charge of 1 coulomb through an electric potential of 1 volt. (1 C*V)
2007-11-23 06:28:58 · answer #4 · answered by MooseBoys 6 · 0⤊ 0⤋
Watt is the unit of power, not energy
2007-11-23 23:16:31 · answer #5 · answered by za 7 · 0⤊ 0⤋
Energy is measured in Joules has a symbol (J).
Base units = kgm^2s^-2
2007-11-23 06:15:37 · answer #6 · answered by Murtaza 6 · 0⤊ 0⤋
have a look at this link
http://en.wikipedia.org/wiki/Units_of_energy
2007-11-23 06:21:46 · answer #7 · answered by frozen 5 · 0⤊ 0⤋