force acting on a moving body is constant in magnitude and direction, the amount of work done is defined as the product of just two factors: the component of the force in the direction of motion, and the distance moved by the point of application of the force. Thus the defining equation...
This equation shows that the effect of heat loss (Q˙<0) from a work-producing device (W˙>0) is to reduce the device's power output. Therefore, most work-producing systems (engines, turbines, etc.) are insulated to improve their efficiency. Similarly, heat loss from a work-absorbing ...
The more you care for your employees and make them feel empowered, the more they stay longer with you and perform efficiently. Moreover, you have to make them feel like you care for them. This job can effectively be done by offering compensation and profits apart from their usual pay. Whi...
The material is only one side of the equation, the other one is the boot construction method which is used to make them. It is a long topic and is discussed in separate point below. Finally, don’t forget the eyelets. If those are too sharp, they will rub against the laces and tear...
The work done by a system can be considered to be made up of two parts: that done against a resisting force and that done against the environment. This can be seen in Fig. 4.1. The pressure inside the system, p, is resisted by a force, F, and the pressure of the environment. Henc...
(i.e., through winning sustainability awards) by reducing environmental impacts, aligning with environmental standards, and investing in the production and distribution of environmentally friendly products. This is all done with the overall objective of improving the organization’s performance (García-...
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 ...
Power is a measure of how quickly work can be done. Using a lever, you may be able to generate 200 ft-lb of torque. But could you spin that lever 3,000 times per minute? That is exactly what your car engine does. The SI unit for power is the watt. A watt breaks down into oth...
This is done in off-peak hours. Essentially, the second reservoir refills the upper reservoir. By pumping water back to the upper reservoir, the plant has more water to generate electricity during periods of peak consumption. The Generator The heart of the hydroelectric power plant is the ...
Power Formula for Electricity In electricity, power is the rate at which electrical energy is transferred. It is measured in watts (W). The power equation is: P = VI where: P is power in watts (W) V is voltage in volts (V) I is current in amperes (A). This formula tells us tha...