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  1. So , I work out only question 1 only. P = IV = ( 200 )( 15 / 2... 9 units of electricity means 9kWh of electrical energy, so t = 9 / 1.5 = 6hrs ( Ans : B ) 2008-01-03 20:35:47 補充: ...

  2. So far, astronomers have found about 70 solar systems and arediscovering...since the first solarsystem apart from ours was detected, so this whole subject is still inits infancy. By the time our...

  3. ... result. Therfore, we should put the air-conditioner at the top of the room so that we can have better cooling. 8. How do we called...

  4. ...to have the plate be earthed to drain away the excess negative charges so as to increase the capacitance of the parallel-plate arrangement. This is the...

  5. so ,what u want do i help u,this is not a question,just a sentence!

  6. Q1 Let the amount be y 3.34 * 10^5 *y = 0.3 * 3800 * 60 y = 0.2048kg Q2 (0.76+x) * 6 * 4200 + 3.34 * 10^5 *x = 30000 359200x = 10848 x = 0.0302kg

  7. So to speak, the value of current has reached a steady value of V1...使用】 The power supply suddenly opposes its emf to V2, so by supply voltage = p.d. across R + L, we have: 圖片參考:http://i117.photobucket...

  8. So to speak, the value of current has reached a steady value of V1...使用】 The power supply suddenly raises its emf to V2, so by supply voltage = p.d. across R + L, we have: 圖片參考:http://i117.photobucket...

  9. So to speak, the value of current has reached a steady value of V1...或使用】 The power supply suddenly drops its emf to V2, so by supply voltage = p.d. across R + L, we have: 圖片參考:http://i117.photobucket...

  10. ...motion equation of an object s=ut+0.5at^2. This equation is very simple so that you can look up from your physics book. If we do not neglect...

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