Jump to content

rktpro

Senior Members
  • Content Count

    624
  • Joined

  • Last visited

Everything posted by rktpro

  1. Hint: a and b are distances measured from focus in formula 1 and from optical centre in the other.
  2. In studiot's solution; The required area is area of ∆ABC - area BDCB.
  3. I have four chickens and when four is squared I get the no. of pair of socks I have. There must be a link between socks and chickens? Pie squared is not exactly equal to 9.8 m/s/s It is just an approximation which sometimes help you in problems where g/pie becomes 1!
  4. Are you sure that unwashed gel got into your scalp and is causing baldness. Better consult a doctor.
  5. In the mobile version of our forum; if you select a thread from new content, in which you have never posted, will always begin with page one. Anyone else noticed?
  6. Telling answers is against rules here. You don't seem to know what Boyle's or Charle's law mean. How about finding out them first. You will find the questions to be ridiculous once you understand the law . These are 'plug and chug' type.
  7. Have you done the experiment or read somewhere that the tube glows? You can get direct answer with a little google search, though. You should always try that first. You can also look into your book and investigate.
  8. I think a cation can react with non polar species as in coordination compounds. For example, oxo-ligand compounds where oxygen act as a ligand.
  9. Do you deliberately mean 'protons' rather proton. I don't think literature ever mentions charge by mass ratio of system of particles. Even then:No e\m doesn't change. It is constant.
  10. Engineers experiment to make things while scientists make things to experiment.
  11. rktpro

    Roget's Spiral

    When the circuit breaks and the coil tries to come down, copper would provide an upward force so that it can resist increase in flux. Since copper is better conductor, the effect might be more. I suspect that's why mercury is quoted in books. Am I understanding you correctly?
  12. rktpro

    Roget's Spiral

    In that case, metal would support contraction. As you raise metal, flux through it increases and it tends to oppose the factor increasing the flux.This case is different from what is intended to be shown in Roget's spiral.
  13. I feel source of knowledge is- Through someone else's words Through literature Through experience Through assumption (as when I see smoke from a forest, I assume fire and act accordingly) I think my list is exhaustive.
  14. rktpro

    A Big Thank You

    He or anyone else posting the above already know what view more than half of the people have.
  15. Did you read what the author say about negative sign?
  16. I say it because I know about potential energy of a system, electrostatic potential in this case due to proton-electron pair and kinetic energy of a revolving electron. And I know that total energy is sum of kinetic and potential energy. Here, http://dev.physicslab.org/Document.aspx?doctype=3&filename=AtomicNuclear_BohrModelDerivation.xml
  17. Attraction results in loss of energy when the attraction causes motion in a conservative field. When you hold two charges, there is attraction between them but you bind them from motion and reaching a state of less potential energy. 2s electron has less energy and hence more energy is needed to be supplied to it to ionize it then 3p. Bohr's model provides a good analysis of one electron atom energy levels. You can check that energy of a bound system(total) happens to be negative.
  18. No I don't, as far as it is not my or beloved one's death.
  19. Wheels would eventually stop at some equilibrium of forces.
  20. rktpro

    Roget's Spiral

    John, when the spring would contract, metal base would prevent it from doing so as per Lenz's law. So the periodic motion of spring might not be clearly visible? Hg is also a metal though.
  21. Deepak mentions of supreme bliss. As a side note I would like to tell him what the Vedic Philosophy says: god is supreme bliss. It is not that happiness is in him, but he himself is bliss. As for accepting that there is a state of supreme bliss is just a matter of faith. Like we don't question why an A is written as such, or spelled as such. I confess that I am not content. I seek happiness, momentarily I get it, and then it's gone. I would like to experience supreme bliss. Deepak mentions of supreme bliss. As a side note I would like to tell him what the Vedic Philosophy says: god is supreme bliss. It is not that happiness is in him, but he himself is bliss. As for accepting that there is a state of supreme bliss is just a matter of faith. Like we don't question why an A is written as such, or spelled as such. I confess that I am not content. I seek happiness, momentarily I get it, and then it's gone. I would like to experience supreme bliss. Deepak mentions of supreme bliss. As a side note I would like to tell him what the Vedic Philosophy says: god is supreme bliss. It is not that happiness is in him, but he himself is bliss. As for accepting that there is a state of supreme bliss is just a matter of faith. Like we don't question why an A is written as such, or spelled as such. I confess that I am not content. I seek happiness, momentarily I get it, and then it's gone. I would like to experience supreme bliss.
  22. rktpro

    Roget's Spiral

    Two years back, I did it and now I know I did it wrong. Salt water, using AC source both were wrong choices that wouldn't allow you to observe the spring motion. The good way is to use merury, decent DC batteries. I think you know the idea how the spiral works?
  23. If you want calcium then use something that can reduce it like Lithium, Potassium, Barium etc,like they do in silver extraction from cynide complex. Although, side reactions would be there.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.