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  1. Thought blocker

    <---------- Surely, I will! :D

    <---------- Surely, I will! :D
  2. Thought blocker

    As physics p1 MCQS YEARLY ONLY.

    LOL
  3. Thought blocker

    :)

    :)
  4. Thought blocker

    Physics: Post your doubts here!

    We are asked to find the length b/w any two atoms...
  5. Thought blocker

    As physics p1 MCQS YEARLY ONLY.

    17) Speed = 10 m/s : 0.5 * m * 100 = 1500 m = 30 kg Speed = 40 m/s : 0.5 * 30 * 1600 = 24000 J 19) All you have to do is put in numbers into the formulas I've given you. You're given the pressure, which is F/A. They want you to find the density. Density=m/v. To get m, you'll need to divide...
  6. Thought blocker

    Aww.. nice eyes.. :)

    Aww.. nice eyes.. :)
  7. Thought blocker

    Physics: Post your doubts here!

  8. Thought blocker

    Physics: Post your doubts here!

    14) moment = force x distance clockwise moment = anticlockwise moment W x a + F x h = W x 2a (easy tha, koi elaboration chahiye to bolna ) :)
  9. Thought blocker

    As physics p1 MCQS YEARLY ONLY.

    I explained it . _ .
  10. Thought blocker

    Physics: Post your doubts here!

    22) Basically, here they asked us to find volume of the crystal (cube), and then we are asked to find its length i.e is 3rd root of volume :¬ Find V from V = m / ρ and 3rd root (V) you'll get the answer
  11. Thought blocker

    Physics: Post your doubts here!

    3) Maximum Height : The maximum height is reached when the velocity is equal to zero t(h) = vsinθ / g where t(h) stands for the time it takes to reach maximum height. From the displacement equation we can find the maximum height h = (vsinθ)² / 2g
  12. Thought blocker

    Physics: Post your doubts here!

    I did it like this, on the first sight :P
  13. Thought blocker

    Physics: Post your doubts here!

    10) Consider barrel : Use F = ma That is mg - T = ma (T = tension): 120g - T = 120a Make T the subject of formula so, later we can equate it in other equation or you can solve it by simultaneous equation method also. But I personally go for Equate so, T = 120g - 120a Consider stake : Again...
  14. Thought blocker

    Physics: Post your doubts here!

    0.7 m ----> 1.1V 0.9m ----> ? ? = 1.4V = D
  15. Thought blocker

    Physics: Post your doubts here!

    Find lost volts(V) = E - Ir so V = 12 - (0.8)(2) = 10.4V Now P = I x V = 0.8 x 10.4 = 8.3W = A
  16. Thought blocker

    Physics: Post your doubts here!

    I am solving everyones doubt line by line, wait... :) Or try yourself, its damn easy.. :)
  17. Thought blocker

    Physics: Post your doubts here!

    5) We know S = d / t = 40 / 2.5 = 16 m/s Uncertainty in speed = (uncertainty in distance + uncertainty in time) x speed --------"--------------- = ( (0.1/40 ) + (0.05/2.5) ) x 16 = 0.36 ≈ 0.4 (1dp) = C 12) Consider barrel : Use F = ma That is mg - T = ma (T = tension): 120g - T = 120a Make T...
  18. Thought blocker

    Physics: Post your doubts here!

    Let's do the math behind this - suppose the distance traveled with both speeds is denoted by "s". Suppose the time taken at 600 kmph = t(1). Then, since Speed = Distance/Time, we can write 600 = s/t(1) So that t(1) = s/600 Similarly, let's do the same for the other speed. The distance...
  19. Thought blocker

    Physics: Post your doubts here!

    Okay, we know V = 340 and f = 500 so take out λ = V / f = 0.68 m We know that one wavelength means 360 ⁰ i.e, 2π so now use the cross multiplication method 0.68 --- > 2π 0.17 -----> ? ? = 90 i.e, π/2
  20. Thought blocker

    Physics: Post your doubts here!

    I = kA² k=I/A² (equation 1) at other position of meter that is equation 2 : 2I=k(x²) 2I= (I/A²) * x² ( 2I * A² ) / I = x² Taking √ both the sides, x = √ 2 * A 24) I α a^2 and I α f^2. Rather than doing all the math to do this, compare the amplitude and frequency of the waves and use the...
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