 | Silas Ellsworth Coleman - 1906 - 456 σελίδες
...of the waste of energy due to friction soon led to the invention of ball bearings. 153. Power. — The rate at which work is done or the rate at which an engine or other source of energy is capable of doing work is called power. The customary unit of... | |
 | Calvin Milton Woodward - 1912 - 538 σελίδες
...body. This brings us to a new word: — POWER. 323. The word "power" is used in mechanics to express the rate at which work is done; or the rate at which a motor of some kind, or some moving body, is able to do work. The thing, animal, machine or material... | |
 | Lewis Raymond Smith - 1924 - 310 σελίδες
...expression of work; the time element is considered in an expression of power, however. Power is defined as the rate at which work is done or the rate at which energy is expended. It is determined by dividing the work done by the time consumed in doing the work. Work done... | |
 | Bekker - 1998 - 220 σελίδες
...= 6,67 A x4Q = 26,68 V =/xR = 6,67 A x 6 Q = 40,02 V V3 = / x R = 6,67 Ax 8 Q = 53,36 V 5. 1 Power Power is the rate at which work is done or the rate at which energy is transferred. The SI unit of power is joules per second (J/s) and is called a watt (W). One watt is... | |
 | Douglas C. Giancoli - 2008 - 1103 σελίδες
...r is the distance of the object from the Earth's center (r > radius of Earth). Power is defined as the rate at which work is done or the rate at which energy is transformed from one form to another: P = dW dt P = F • v. dt (8-20) (8-21) | Questions 1. List some... | |
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In chapter 7 we defined power as the rate at which work is done, or the rate at which energy is transferred. 