Calculate how much power , in watts , is needed to cut a lawn in 50 min if the work involved is 100000J .怎么做?中文意思是什么啊?答案,答案?(帮帮我啊!)作业帮用户2017-06-03 举报 用这款APP,检查作业高效又准确!扫二维码下载作业帮 拍照搜题,秒出答案,一键查看所有搜题记录其他回答 计算在瓦多...
For calculating electrical energy demand, watts are used. If the wattage your appliance requires is not specified on the manufacturer's label, it should show the line voltage and amps the appliance requires instead.
The Watts Equation in Mechanics You can use either of the following equations to calculate power in watts, provided all quantities are expressed in in MKS (meters, kilograms, seconds) metric units. P = F × v \\ P = \frac{W}{t} If you do your measurements on the CGS (centimeters, ...
In electrical engineering, the Power Factor (PF) is a ratio of the real power measured in watts absorbed by the load to the apparent power measured in volt-ampere flowing in the AC (alternate current) circuit. Power factor is a dimensionless number in the closed interval of -1 to 1, thi...
Definition and Equations for Power Electric power, is the rate of doing work, measured in watts, and represented by the letter P. The term wattage is used to mean "electric power in watts." The electric power in watts produced by an electric current I consisting of a charge of Q coulomb...
Calculating an RMS value is similar to an average; it is a statistic that can tell you important information about a set of numbers of a function. For sinusoidal currents, used to calculating peak power or RMS power in watts, a peak power to rms calculat
P = power in watts (746 watts = 1 hp) (1,000 watts = 1 kilowatt) rho = air density (about 1.225 kg/m3 at sea level, less higher up) A = rotor swept area, exposed to the wind (m2) Cp = Coefficient of performance (.59 {Betz limit} is the maximum theoretically possible, .35...
Solution: according to: current = power input voltage = 10000 watts = 220v = 45.5 ampere You can use 6 square millimeters of wire Answer: use 6 square millimeter of wire The attached: The carrying capacity of commonly used wires in the modern electrician manual of guangdong science and ...
Power Formula 1– Electrical power equation:PowerP=I×V=R×I2=V2⁄R where powerPis in watts, voltageVis in volts and currentIis in amperes (DC). If there is AC, look also at the power factorPF= cosφandφ= power factor angle ...
Thus, P = ((1)^2)*(1+2) = 3 watts That's the equation for the power dissipated in the resistors which might be different to that delivered by the 12V battery. aralbrec has given you a good clue as to why these two are not the same thing. What's happening to the 9V battery...