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Energy is defined via work, so the SI unit of energy is the same as the unit of work – the joule (J), named in honour of James Prescott Joule [1] and his experiments on the mechanical equivalent of heat. In slightly more fundamental terms, 1 joule is equal to 1 newton metre and, in terms of SI base units
In terms of SI base units, one joule corresponds to one kilogram-square metre per square second (1 J = 1 kg⋅m 2 ⋅s −2). One joule is equal to the amount of work done when a force of one newton displaces a body through a distance of one metre in the direction of that force.
The newton-metre or newton-meter (also non-hyphenated, newton metre or newton meter; symbol N⋅m [1] or N m [1]) [a] is the unit of torque (also called moment) in the International System of Units (SI). One newton-metre is equal to the torque resulting from a force of one newton applied perpendicularly to the end of a moment arm that is one ...
V/m = N/C kg⋅m⋅A −1 ⋅s −3: D electric displacement field: coulomb per square metre: C/m 2: A⋅s⋅m −2: ε permittivity: farad per metre: F/m kg −1 ⋅m −3 ⋅A 2 ⋅s 4: χ e electric susceptibility (dimensionless) 1 1 p electric dipole moment: coulomb metre: C⋅m A⋅s⋅m G; Y; B conductance; admittance; susceptance ...
Torque has the dimension of force times distance, symbolically T −2 L 2 M and those fundamental dimensions are the same as that for energy or work. Official SI literature indicates newton-metre, is properly denoted N⋅m, as the unit for torque; although this is dimensionally equivalent to the joule, which is not used for torque.
The work done when a force of one newton moves the point of its application a distance of one metre in the direction of the force. [ 32 ] = 1 J = 1 m⋅N = 1 kg⋅m 2 /s 2 = 1 C⋅V = 1 W⋅s
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The unit is dimensionally equivalent to the units of energy, the joule; but the joule should not be used as an alternative for the newton metre. Linear momentum: p: kg·m/s or N·s (Linear) impulse: J: N·s or kg·m/s Angular momentum: L: kg·m 2 /s or N·m·s Mechanical energy, Work: E, W: joule: J 1 J = 1 kg·m 2 /s 2 = 1 Pa·m 3 = 1 W·s ...