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  1. skylexgale

    AS PHY PRACTICAL 33

    So when we find absolute uncertainty, we don't take into account the calculated value? shouldn't it be 0.1/calculated-value ?
  2. skylexgale

    AS PHY PRACTICAL 33

    Ah, thanks a lot. Best of luck tomorrow!
  3. skylexgale

    AS PHY PRACTICAL 33

    So for example if L1 = 2 L2 = 3 For them being multiplied I will do ( 0.1/2 + 0.1/3 )* L1*L2 (* shows multiplied by) and for divided ( 0.1/2 + 0.1/3 )* L1/L2 and for L1^4 (^ is raised to power) (0.1/2)*4
  4. skylexgale

    AS PHY PRACTICAL 33

    turn on hotspotshield or something and watch
  5. skylexgale

    AS PHY PRACTICAL 33

    okie thanks A few more things 1. If say I was asked to add two lengths L1 and L1 will uncertainty by (0.1 + 0.1)/(L1+L1) 2. If say I was asked to subtract two lengths L1 and L1 will uncertainty by (0.1 + 0.1)/(L1+L1) 3. If say I was asked to multiply two lengths L1 and L1 will...
  6. skylexgale

    AS PHY PRACTICAL 33

    So do we always do it like that? Like for example I am asked to measure a length of wire, I get answer 20.0 cm lets say least count on my meter rule is 0.1 cm then they ask me for absolute uncertainty I will say (0.05 + 0.05)/2 ? or will I say 0.05/2?
  7. skylexgale

    AS PHY PRACTICAL 33

    sorry I meant to say independent resistor, not variable
  8. skylexgale

    AS PHY PRACTICAL 33

    yeah that's probably variable resistor I'm also unsure about absolute uncertainty, isn't it supposed to be least count/2?
  9. skylexgale

    AS PHY PRACTICAL 33

    Can you please explain further what you mean, I don't quite get it. 'Calculated value is a measurement', I guess you mean that if two values are taken and added or subtracted then we add the uncertainties together (and since taken from same instrument it's same was x2)
  10. skylexgale

    AS PHY PRACTICAL 33

    Can someone tell me if it's possible for a graph in the Q1 to be a curve? If so, how?
  11. skylexgale

    AS PHY PRACTICAL 33

    I haven't seen that in the marking schemes I was looking in, the use of video recorders and playing back is a more common marking scheme answer for the whole reaction time issue, so go for that.
  12. skylexgale

    AS PHY PRACTICAL 33

    then what is the wire for? I totally don't get it I and V values give R when you get the gradient....don't you? Also I read in some marking scheme somewhere that we shouldn't be using y=mx+c when it's not needed, but I'm not certain what it meant or where I it was that I read it
  13. skylexgale

    AS PHY PRACTICAL 33

    isn't the least count of a meter rule 0.1 mm, which is 0.01 cm and thus uncertainty = 0.005/calculated-value ?
  14. skylexgale

    AS PHY PRACTICAL 33

    I hate electricity practicals blah. I'm really hoping somehow first question doesn't even have a graph. Has it ever happened that a electricity part didn't have a graph?
  15. skylexgale

    PEOPLE....PLEEEEEEEEEEEEEEEZE CHEM PRACTICAL GUESSES

    FA7 Sprite (Test: Drink and see if you suddenly have a buckets worth of water splashed at you) FA8 Alcohol (Test: Drink and. Never mind, it's not like you'll remember or care about the test after you drink it anyway.) ...
  16. skylexgale

    PEOPLE....PLEEEEEEEEEEEEEEEZE CHEM PRACTICAL GUESSES

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  17. skylexgale

    PEOPLE....PLEEEEEEEEEEEEEEEZE CHEM PRACTICAL GUESSES

    FA1 Gummy Berry Juice FA2 Love Potion FA3 Diet Coke (caution - very addictive) ....
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