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  1. hellodjfos;s'ff

    Physics: Post your doubts here!

    As theta is 90, 2 forces, f1 and f2 must have such a magnitude that they form a resultant of 10N in a right angle triangle(upward=downward forces). So apply pythagoras on each option and see which options get the answer 10N. This will turn out to be C or D, so the correct answer is one of them...
  2. hellodjfos;s'ff

    Physics: Post your doubts here!

    The paper will definitely start off with base units/confirmation of units along with scalar/vector identification. We would also have the standard momentum questions too. Then, we would surely have a couple of slope questions and a potentiometer/potential divider question. A resistivity and...
  3. hellodjfos;s'ff

    Physics: Post your doubts here!

    27: The formula for path difference is (n-1/2)lamda n=2, and you can find lamda using x=lamda(D)/a (the double slit formula) Your lamda will turn out to be 4x10^-9 m Now just insert the n and lamda into the path difference equation: (2-0.5)(4x10^-7) Ans will be option C 28: For open tube/pipe...
  4. hellodjfos;s'ff

    Physics: Post your doubts here!

    Actually, I don't think A is the answer. A will cause more extension... and they are asking for which option will not have a desired effect. Clearly A is a desired effect since there is more compression.
  5. hellodjfos;s'ff

    Physics: Post your doubts here!

    Your most welcome
  6. hellodjfos;s'ff

    Physics: Post your doubts here!

    13: You can form a right angle triangle with 3,4 and 5N forces which give a resultant force of 0. I have shown this in the attached picture. The resultant of the forces, 3N and 4N is 5N. This resultant can be opposed by the other 5N force available, hence the final resultant force is zero.
  7. hellodjfos;s'ff

    Physics: Post your doubts here!

    There needs to be a force pulling the particle up to balance out the weight of the particle. The particle will continue to move horizontally if the vertical forces are balanced. If you look at A, the electric field is downwards meaning the positive terminal is up and since the particle would be...
  8. hellodjfos;s'ff

    Physics: Post your doubts here!

    Hope for the best, just make a backup plan in case you know you don't get in.
  9. hellodjfos;s'ff

    Physics: Post your doubts here!

    Damn
  10. hellodjfos;s'ff

    Physics: Post your doubts here!

    2010, she said that her percentages where reduced by 10%.
  11. hellodjfos;s'ff

    Physics: Post your doubts here!

    Dude, the situation is not as bad as it is in Pakistan. Living in Pakistan over a long time is a real pain. What happens in other countries is that inflation is low and the firms in other companies increase wages slowly each year(by a small percentage) so that this inflation is covered up and...
  12. hellodjfos;s'ff

    Physics: Post your doubts here!

    So yeah doing a-levels used to damage your chances of getting into a government institute, but I'm not sure what the rules are right now.
  13. hellodjfos;s'ff

    Physics: Post your doubts here!

    With 4A*s you can't get into any university bro
  14. hellodjfos;s'ff

    Physics: Post your doubts here!

    She did A-levels but still got in. The government purposely reduces value of A-level grades compared to Fsc grades for equivalence certificates so that students who want to get into government universities do FsC rather than A-levels(which is stupid since A-levels has more value than Fsc, fsc is...
  15. hellodjfos;s'ff

    Physics: Post your doubts here!

    Dude that's terrible. If I go abroad, I'd be getting at least 1500 USD a month which is like 150k PKR
  16. hellodjfos;s'ff

    Physics: Post your doubts here!

    Seems cool. Medical institutes here are good. But if you're gonna work, I would suggest you don't work in Pakistan(unless it's Aga Khan) because doctors are not valued here. I mean my cousin did her undergrad from King Edward MC and she's working at DHA National Hospital for like 50k a...
  17. hellodjfos;s'ff

    Physics: Post your doubts here!

    I partially agree with you. Nothing besides businessmen or politicians are valued in Pakistan. Doctors, engineers, lawyers, none of them are valued. Bare in mind, these are very common fields, so if I go into less popular fields like fundamental physics or any other specified field, they are not...
  18. hellodjfos;s'ff

    Physics: Post your doubts here!

    Your plans? I mean your subjects allow you to keep your options open. At this point you can enter any field you like.
  19. hellodjfos;s'ff

    Physics: Post your doubts here!

    Gonna go abroad most likely to the US. If not, then there's Australia and UAE(a few unis that give scholarships there too). There aren't any good quality engineering institutes in Pakistan. Like I know everyone says GIK and NUST are good, but the fact is that by international standard, they're...
  20. hellodjfos;s'ff

    Physics: Post your doubts here!

    Damn, tough subjects in a-levels. A lot of theory there.
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