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  1. gary221

    :p

    :p
    • gary221
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  2. gary221

    Physics, Chemistry and Biology: Post your doubts here!

    2 a) Weight = mass * gravitational field strength. ------> W = 5.4 * 10 = 54 N b i) the point where proportionality between force/weight and extension/Hooke’s Law stops . [Limit of proportionality is the point which if exceeded, the spring extension will no longer be...
  3. gary221

    Dear Teacher, I talk to everyone, so moving my seat won't help. Sincerely, Student

    Dear Teacher, I talk to everyone, so moving my seat won't help. Sincerely, Student
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  4. gary221

    This is the time every night where I try to convince myself that I will feel even better with 5...

    This is the time every night where I try to convince myself that I will feel even better with 5 hours of sleep rather than 6.
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  5. gary221

    aah, yes thnx 4 tht reminder....u wudnt want a transylvanian angry at u ....grrr...

    aah, yes thnx 4 tht reminder....u wudnt want a transylvanian angry at u ....grrr...
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  6. gary221

    Physics: Post your doubts here!

    the mass is 4u (u =unified atomic mass unit) So, convert the mass 4u into kg ----> 4 * u (u = 1.66 * 10 ^-27 kg. given at the start of the ppr--> http://prntscr.com/11zleg hence mass = 4 * 1.66 * 10^-27 kg.
  7. gary221

    Physics: Post your doubts here!

    ^ D
  8. gary221

    Physics: Post your doubts here!

    I remember tht...kinda tough, hold on. pressure = density * g * height pressure in the hole = 17.5MPa = 17.5 * 10^6 Pa, which is a result of the pressures of both the liquids p1 n p2 So, P(hole) = P1 + P2 17.5 * 10^6 = (d1 * g * h1) + (d2 * g * h2) ------> d1 = density of water =...
  9. gary221

    np :)

    np :)
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  10. gary221

    https://www.xtremepapers.com/community/threads/physics-post-your-doubts-here.9860/page-210#post-4...

    https://www.xtremepapers.com/community/threads/physics-post-your-doubts-here.9860/page-210#post-496471
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  11. gary221

    Physics: Post your doubts here!

    minie23 6 a) 92 protons in the nucleus and 92 electrons around nucleus. [u just hv 2 know what is the atomic no.(no of protons) which is always equal to the no. of electrons in a neutral atom. Since atomic no = 92, protons=92 e=92] 143 neutrons (in the nucleus). [the mass no = no of nucleons (ie...
  12. gary221

    lady, u insulting me?? wht does it matter, go right ahead!! :D n my...

    lady, u insulting me?? wht does it matter, go right ahead!! :D n my "cramming-if-u-prefer-it-bt-its-actually-revision" is gng on quite well, thnx!! n wbu?? hows ur 'starting work way b4 any1 else' gng on??
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  13. gary221

    ~~jokes?? in here?? really??

  14. gary221

    ~~jokes?? in here?? really??

  15. gary221

    ~~jokes?? in here?? really??

  16. gary221

    ~~jokes?? in here?? really??

  17. gary221

    to the inexperienced eye, thts wht it luks like..i pity u n ur crude, naive assumptions abt...

    to the inexperienced eye, thts wht it luks like..i pity u n ur crude, naive assumptions abt awesum ppl like us *sigh* how u cn hv d nerve 2 say thti cnt understand, like thr songs are breakthrough innovations?? n dua to hum defn karaingay, aapko bolnay i thodi zaroorat hai!! :P
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  18. gary221

    Physics: Post your doubts here!

    34) V = IR ie voltage/p.d is directly proportional to resistance, n current is inversely proportional to resistance. So, when R increases, terminal pd will also increase. (remember cell emf = terminal pd + lost volts due to internal resistance) also, when R increases, current in the circuit will...
  19. gary221

    Physics: Post your doubts here!

    15) For 2 forces to be a couple, they must b in the opp dir, perpendicular to the object----> http://www.s-cool.co.uk/a-level/physics/moments-couples-and-equilibrium/revise-it/couples So, only B fulfils tht category. A will cause a resultant force. C= no resultant force n no couple. D = forces...
  20. gary221

    Physics: Post your doubts here!

    s11 p12 2) You just have to remember the formula (n hence the units) of the given quantities. ie energy = force * displacement (N * m). so, a is correct. b) power = work/ displacement (J/s) which is clearly wrong. Hence ans = b) 10) Force= mass * acceleration. Clearly the direction of the...
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