Search results
As is implied by the equation for power, a unit of power is equivalent to a unit of work divided by a unit of time. Thus, a Watt is equivalent to a Joule/second. For historical reasons, the horsepower is occasionally used to describe the power delivered by a machine.
26 mar 2016 · Power is work or energy divided by time, so power has the units of joules/second, which is called the watt — a familiar term for just about anybody who uses anything electrical. You abbreviate a watt as simply W, so a 100-watt light bulb converts 100 joules of electrical energy into light and heat every second.
The dimension of power is energy divided by time. In the International System of Units (SI), the unit of power is the watt (W), which is equal to one joule per second. Other common and traditional measures are horsepower (hp), comparing to the power of a horse; one mechanical horsepower equals about 745.7 watts.
Power, which is measured in watts, equals energy transferred, which is measured in joules, divided by time, which is measured in seconds. This means that an energy transfer of one joule...
16 kwi 2021 · The power associated with a force is simply the amount of work done by the force divided by the time interval Δt over which it is done. It is therefore the energy per unit time transferred to the object by the force of interest.
Since work can vary as a function of time, we first define average power as the work done during a time interval, divided by the interval, Pave = ΔW Δt. P ave = Δ W Δ t. 7.10. Then, we can define the instantaneous power (frequently referred to as just plain power).
