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New page: In physics, power refers to the rate of transfer of energy respect to time. Mathematically, average power is expressed as: P = W / Δt Therefore, power at any instant can b...
In physics, power refers to the rate of [[Work|transfer of energy]] respect to [[time]].
Mathematically, average power is expressed as:
P = W / Δt
Therefore, power at any instant can be determined by the equation:
P = lim<sub>Δt->0</sub> W / Δt = dW / dt
Since W = [[Force|F]] d[[distance|x]] and [[Velocity|v]] = dx / dt follows that:
P = F dx / dt = F v
The usual units for power are [[Watts]] ( W = [[Joule|J]]/[[seconds|s]] ) and [[horsepower]] ( hp = 746 W )
[[Category:Physics]]
Mathematically, average power is expressed as:
P = W / Δt
Therefore, power at any instant can be determined by the equation:
P = lim<sub>Δt->0</sub> W / Δt = dW / dt
Since W = [[Force|F]] d[[distance|x]] and [[Velocity|v]] = dx / dt follows that:
P = F dx / dt = F v
The usual units for power are [[Watts]] ( W = [[Joule|J]]/[[seconds|s]] ) and [[horsepower]] ( hp = 746 W )
[[Category:Physics]]