Recent content by kky

  1. K

    How does a battery charger work?

    I have little idea on how a battery charger works but i'll just state here what I think is the case and then state my queries. When you receive an AC input from the mains there is first a step down transformer which lowers the voltage - then there is some regulation and it is converted to DC...
  2. K

    Can Immersion in a Liquid with Equal Body Density Mimic Zero Gravity Experience?

    Suppose I prepare a liquid whose density is equal to the average density of my body. Hence when I am completely immersed in it the upthrust provided will be equal to my weight. Will what I experience in such a liquid be similar to what I'll experience in zero gravity?
  3. K

    Max Entropy: Second Law of Thermodynamics & Its Effects

    By the second Law of Thermodynamics, we know the Entropy of the Universe always increases. But we also know by the formula dS = d'Q/T that when we supply heat and increase the Entropy we also increase temperature. As for a given amount of heat the increase in entropy is smaller at a higher...
  4. K

    What Prevents Air from Flowing Out of Earth's Atmosphere?

    Ouch! That hurt. We know by the maxwell Boltzmann distribution curve that a fraction of the air molecules will be above the escape velocity of the earth. Of course they might collide with other molecules and lose their kinetic energy before they can escape but atleast a few molecules near the...
  5. K

    What Prevents Air from Flowing Out of Earth's Atmosphere?

    Just out of curiosity, We know that the atmosphere is at a pressure of approximately 101 kPa at the sea level and decreases with height. But in space there is no atmosphere and hence zero pressure; Should that not mean that the air in the atmosphere should flow out into space like in a free...
  6. K

    New Forum Member: Induction Problem Solving

    and btw, I've figured out how to do it without using induction. but i want to know how to prove it using induction
  7. K

    New Forum Member: Induction Problem Solving

    just joined the forum Homework Statement n(1/n) > (n+1)1/(n+1) for all n>=3. Homework Equations The Attempt at a Solution k1/k > (k+1)1/(k+1) => k > (k+1)k/(k+1) => k+1 > (k+1)k/(k+1) + 1 => (k+1)1/(k+1) > [(k+1)k/(k+1) + 1]1/(k+1) I then tried binomial...
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