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  1. ...的定義是 the sudden reversal of the membrane potential depolarization is the electrical change which occurs... potential 都是+40 mV,而唯一不同的是會有更多action potential 在這段時間產生.(Higher magnitude of stimulus will only...

    分類:科學及數學 > 生物學 2007年04月02日

  2. The potential of the ruler should be lowered than before the -ve charged object ... potential of space surrounding it. As such, it also affects the potential of the ruler that is near to it, unless the ruler is earthed...

  3. Electric potential is formally defined using "work done". As... a small positive unit charge (a +ve test charge) from infinity (which is of potential zero) to the point of interest. A negative potential ( potential < 0...

  4. Gravitational potential energy is defined to be the work done by the external force against...gravitational force is ATTRACTIVE. Therefore, by definition, gravitational potential energy must be negative. Or you can think in this way. Since positive work...

  5. ... "height" in mechanics is similar to the "electrical potential " in electrostatics. A difference in electrical potential casues a charge to...

  6. ... force (abbreviation: e.m.f.) and potential difference are conceptually different. Though...supply from the negative terminal to the positive terminal. Potential difference between two points is the...

  7. 以上的朋友說錯了 potential energy 才是勢能(位能) 而 potential difference是電勢差或電壓 電勢 potential 的定義...

  8. ... have the same states of motion. The kinetic energy and potential energy of molecules follow a distribution, i.e. some molecules possess...

  9. ...simply because the sphere Y is earthed. Thus, its potential is always kept at earth potential (i.e. zero volt by reference). If...

  10. .... Because the molecular separation has increased, the potential energy of molecules increases. If the temperture of the solid...