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Search results

  1. Saad Mughal

    Maths, Addmaths and Statistics: Post your doubts here!

    No problem at all. :)
  2. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    :)
  3. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    The distance from lens to object = 8 cm. Focal length = 3 cm. (2F = 6cm). The object is even further than 2F hence the image will be formed in between F and 2F (real, inverted and diminished), if you've correctly done part (i) then you'll get the height by measuring the height of the image. I...
  4. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Our syllabus is the same as the extended syllabus for IGCSE, so you have to do everything. Cramming doesn't help at all in the sciences subjects. Read the book/notes once. Then do ATP papers and MCQ's, they build up your theories and concepts.
  5. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Yes you can. IGCSE (extended syllabus) and our syllabus is pretty much the same.
  6. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Yeah you can study from them. For IGCSE, the ATP is paper 6. For O'levels, the ATP is paper 4.
  7. Saad Mughal

    Maths, Addmaths and Statistics: Post your doubts here!

    (i) The velocity vector is in the form (xi +yj). The magnitude is given (10√2), this means that 10√2 = √x^2 +y^2. The direction is north - east, this means that a angle of 45 deg. is subtended with both y-axis and x-axis (see diagram). For calculating the component vectors, take trigonometric...
  8. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Compound ions, SO4, NO3, NH4, they are in the syllabus buddy.
  9. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    You'll get the two marks.
  10. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    They don't actually become ions, they share in an unusual way to give an overall negative charge.
  11. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Hydrogen being the only non-metal that produces positive ions makes it confusing, really.
  12. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Yeah, a capital M stands for mega (10^6) and small m stands for milli (10^-3).
  13. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    P.S. I do not own any of the notes.
  14. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Chlorophyll is the catalyst for the reaction of creation of glucose. Otherwise, the reaction would be too slow and the plants would die away. Light (from sun mostly) provides the energy for the reaction of photosynthesis. Carbon dioxide is an essential part of the photosynthesis process as 6CO2...
  15. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    It's just like reading a graph, I assume you can do that. The y-gain and the x-gain will be given (they are the SCALES for the graph).
  16. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Other than this, you need to know that CRO's are used to display wave forms, measure pd's (by the vertical movement on the screen), measure short intervals of time (used to calculate speed of sound, using concepts of echos).
  17. Saad Mughal

    Maths, Addmaths and Statistics: Post your doubts here!

    Yes.
  18. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    So did I.
  19. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Actually it would, Copper (II) hydroxide (a base) and Sulphuric Acid would have a neutralization reaction not a displacement reaction.
  20. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    No, A should be the answer since BaSO4 is not soluble and hence, the method would NOT work.
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