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  1. R

    Q help

    ^^^^ !!!
  2. R

    Why does the LIATE rule not work here?

    ye fair it does work - the worked sols seemed rigged as they let u = cos instead.......
  3. R

    Why does the LIATE rule not work here?

    I rely on the LIATE and realised it does not work here? Can someone clarify....
  4. R

    HELP! Chem practical test on Mod 1 and 2

    yep - also go through the notification and highlight any dotpoints that have "conduct investigations" or something similar --> then try to sum up a list for accuracy, reliability and validity....
  5. R

    Answers for the following q...

  7. R

    feedback for thsconline

    just love the site as it is...
  8. R

    What would the answer to the following q be and why?

    @Thundermaster123 but if flux were constant there would be no emf and the question only lists the emf graph - ig what you mean is that the magnitude of lux is constant (but that still does not make sense since flux is a scalar quantity I believe)...
  9. R

    What would the answer to the following q be and why?

    ye I was confused by that too - but then I realised that flux is a vector quantity.... Could someone clarify the answer? Thanks!!! Edit: flux density is vector and flux is scalar (the truth)
  10. R

    What would the answer to the following q be and why?

    Question 6.13.2.9
  11. R

    Do we memorise the following standard integrals?

    Fair - cos we have this whole exercise in cambridge which instructs us to memorise the form so that we can apply it straight away instead of using trig sub
  13. R

    Do we memorise the following standard integrals?

    or rather can we just use U-substitution to prove these results?
  14. R

    Do we memorise the following standard integrals?

    Do we just memorise the integrals given above?
  15. R

    Is it possible for me to get band 6 in English and E4 in Extension 1 Math?

    Tbh you will never really know it until you do it. I would suggest looking at this from this point of view: if you aren't performing well, then any small gain is something that you need to proud off. Just ignore your past marks and try to improve (by any extent). By doing so, the pressure of...
  16. R

    Change in flux

    Will the there be essentially no change in flux when a conductive material is moved over a uniform magnetic field? I ask this with reference to the following question:
  17. R

    Question?

    Hey guys what answer would you guys get for the question above!!!
  19. R

    WHY and HOW do ferromagnetic substances increase magnitude of magnetic field

    Yh in essence what @idkkdi said. They have magnetic domains which are initially unorganised. But then the effectively align with the magnetic field lines, when flux is passed through them. Hence the magnetic field is confined to a particular direction and area (more flux linkage) with the...
  20. R

    Step up/step down

    lol just wanted a good flow diagram. But thanks anyways. Would be good for other members with similar doubts
  21. R

    Step up/step down

    Does anyone have a nice flow diagram which I can use to visualise how the voltages are increased and decreased at various lengths when electricity is transmitted from a power station to our consumer needs in the 240v AC outlet....
  22. R

    Current in a DC motor with a commutator

    yh I get that - put when a commutator is in place, what is the point in which the current is reversed so as to maintain constant torque direction @Bob99 ..... just asking since this is when the rotor coil switches its electrical contacts with the brushes....
  23. R

    Current in a DC motor with a commutator

    Does the current switch direction when the rotor coil is vertically upwards (when there is no electrical connection). Can someone explain this to me?
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