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  1. S

    help for physics paper 1 0625 ASAP plz

    The best way to look at it as follows: This is a potential divider, when you move K towards X, voltage across L1 decreases whereas the voltage across L2 increases. The power dissipated across the bulbs will be given by IV=V^2/R. So the bulb L1 will get dimmer as the voltage decreases and bulb...
  2. S

    are u smart enuf to answer?

    potential is scalar, so you can just add up. Since the charges are both positive, it will not be zero, it will double as the potential of each one. If d is the separation between them, then the potential is equal to: 2*(kq/(d/2)). I forgot to notice that you are bringing in a third charge ( a...
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