Recent content by lee26loo

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    physics problems on current electricity.?

    [1] 3 * 5.9 = 17.7 [2] 3 / 7.2 = 0.416666
  2. L

    physics problems on current electricity.?

    [1] 3 * 5.9 = 17.7 [2] 3 / 7.2 = 0.416666
  3. L

    Anyone know the Basic Electronics/Electrical Forumulas?

    E = IR I = E/R R = E/I W=I^2*R W=IE W=E^2/R R = R1+R2 in series circuit 1/R = 1/R1 + 1/R2 in parallel circuit total current = I1 + I2 in parallet circuit current is the same in series circuit total voltage = V1 + V2 in a series circuit voltage is the same in a parallel circuit...
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    How come when I open Windows Media Player sometimes, I hear sound but no window

    Windows media player did not support the movie format that you played. It needs more codec or install an update version like 11.0
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    Diodes, electronics, Current question?

    Answers: A. Vout = 0.6 + 12 = 12.6 volts I peak = (30 - 12.6)/ 2.2K = 7.9 ma B. V out = 12 - 0.6 = 11.4 volts i peak = (30 - 11.4)/2.2k = 8.45 ma C. V out = -12 +0.6 = -11.4 v. I peak = (30 - (-11.4))/2.2k = 18.8 ma D. V out = -12-0.6 = -12.6 v I peak = (30 - (-12.6))/2.2k...
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    Flash Drive Troubles?

    Your flash drive has nothing wrong. Only Vista does not recognize it.
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    Flash Drive Troubles?

    Your flash drive has nothing wrong. Only Vista does not recognize it.
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    Flash Drive Troubles?

    Your flash drive has nothing wrong. Only Vista does not recognize it.
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    Can a Flash drive kill the speed on a computer? My internet is crap!?

    Flash drive does not slow down internet unless during the moment when it was store or copy information from your computer,or your computer is quite slow (cpu = 1 Ghz or lower). Some flash drive like Scan-disk contains a software called U3,it popups another exploror to go online,it might slow...
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    Electronics....................................... ..................?

    Negative feedback is always needed in sound amplifier to reduce the distortion and make the frequency reponse more FLAT in gain. But negative feedback reduces the gain of amplifier. But we do not want positive feedback happen in sound amplifier,because it becomes a sound oscillor produce high...
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