Recent content by projjal

  1. P

    Charged particles arranged in tetrahedron

    I think that's not correct.
  2. P

    Find potential inside spherical shell

    Yeah. You also know the potential at centre due to charge q and wid that you get the answer.
  3. P

    Find potential inside spherical shell

    Hint:the whole sphere is an equipotential region.
  4. P

    Find molar mass and number of degrees of freedom from heat capacities.

    Everything's OK.
  5. P

    Calculate: the net electric flux = flux through rounded portion + flux

    Why that?
  6. P

    Find Mass of Rope Given Horizontal Force of 20N

    Well, sorry for my incomprehensibility.Its first time I came across such problem.
  7. P

    Find Mass of Rope Given Horizontal Force of 20N

    Without θ question is incomplete. The horizontal force applied is 20N : only this information cannot determine the mass of the rope.
  8. P

    Average energy mass on a spring

    Yes, the mean PE will be half of the maximum , but not just like that. PE at any instant is 1/2 kx2 = 1/2kx02cos2(ωt+ø) , avg. of cos2(ωt+ø) over a time period is 1/2.
  9. P

    Solving Carnot Cycle Problem: Struggling with b & c

    How can you just cut the ln sign from both sides?
  10. P

    Young's Double Slit: Find Min. Plexiglas Thickness for Dark Spot

    Thats where you made the mistake.The beam passing through the plexi covers larger optical path. So its path would be 1/2λ greater than the other.
  11. P

    Tension and Acceleration with a Pulley and Two Masses

    In the torque equation, there'll be torque due to the force of friction.
  12. P

    Distance travelled in n time when a body is thrown upwards

    man you made a slight arithmetic mistake in the last line.
  13. P

    Wheatstone bridge arrangement with an ideal wire in middle

    Correct.Now find the current through C & D (or A & B) and hence you will get the current through the connecting wire.
  14. P

    Wheatstone bridge arrangement with an ideal wire in middle

    No. It would mean (A parallel C) in series with (B parallel D). Calculate the current through the resistors and from this you can find the current through the bridge.
  15. P

    Undergrad Is electric potential always continuous in an electrostatic field?

    What if E vector is discontinuous at one point?