Recent content by .:JimmY:.

  1. J

    What Causes Negative Gravitational Force Between Particles?

    Well it couldn't be Gravitational force -you are talking about then. Either you have mistaken something else as Gravitational force or there is something wrong with your solution to the problem.
  2. J

    What Causes Negative Gravitational Force Between Particles?

    Verbally, It means two masses (electron and proton -in your case) will be replelling each other. But it is not possible b'coz Gravitational force depends on the product of masses and distance - and under any circumstance there is no way the product is coming out as "negative" to make a...
  3. J

    Does the Expansion of Space Mean Everything is Growing?

    If you have heard of Theory of Relativity, it points out a star as a massive object deforming the "fabric of space-time".
  4. J

    Wind Power: Where Does the Energy Come From?

    It depends, around the blades of a wind turbine there will be some swirling, rotating and kind of random currents in the wind. But at a distance everything will be fine again.
  5. J

    Wind Power: Where Does the Energy Come From?

    The main reason for wind to blow is the temprature difference caused by either sun -directly- or the poles. Sometimes rotation of the Earth also has a part to play - jet stream, you might have head of, is due to the rotation of the earth. But no harvesting wind energy will not "steal" away...
  6. J

    Room Full of Hydrogen: Fusion or Entropy?

    NO, actually heat provides atom of -lets say- hydrogen with enough energy to collide with other hydrogen atom in order to fuse together. And fusion would not start by itself, i think my earlier post must hav e made it clear.
  7. J

    Room Full of Hydrogen: Fusion or Entropy?

    Entropy is a measure of the disorder or randomness of the system. Greater the randomness in a system greater the entropy is... Gas > Liquid > Solid Also, dS = Q/T dS = Change in entropy of a system Q = heat absorbed by a system in a...
  8. J

    Solve the Tough Question: Roof Tile Falling from a Building

    Heres the caluclations s = 1.6 t= .2 a = g = 9.81 v =? s = vt +at^2 and v turns out to be 6.038 well this is the velocity when it reached the point -lets say- x which is when observer first sees it. because it fell off the roof and traveled let's say distance d...
  9. J

    Orbital Energies And Force Perpendicular to Motion

    Yes, Instead of going against the gravitational pull- while applying force in perpendicular direction of the motion- it is much easier to do. Sure it will. the equation yields (v^2) = GM/r ... r= R+H (R = radius, H = Hieght above the surface) G is a constant asn so is M- in case...
  10. J

    Why the earth is rotating along its axis?

    Well you might have read or heard about How Earth was created, it says small circular discs/ plates came closer and joined together because of gravitational force. Just assume at some point in a very early phase of the planet it was not spinning and all of sudden a large piece of planetary...
  11. J

    Does Entropy Change When the Universe Contracts or Expands?

    well, Entropy of the universe is always increasing-no matter what. Never heard about expanding universe has anything to do with it..
  12. J

    Orbital Energies And Force Perpendicular to Motion

    Lets see, Force is applied to an object in some direction - do not make an assumption where the object will move- if the object moves or displaces in any direction perpendicular to the direction of the applied force, it is obvious that our force has nothing to with the motion of the object or...
  13. J

    Compress Nothing: What Emerges?

    If "nothing" implies the space then compressing it would be like something happeneing at the center of a black hole as it is believed "churning the space time"- if i am not mistaken. You can expect to see some gravitation related effects may be some anti-particle ... But if the "nothing" just...
  14. J

    Exploring the Science Behind the Crackling Sound of Electric Discharge

    The basic idea behind the concept is correct but 'm afraid not everything what you said. It is not because of an air molecule hitting another air molecule.Sudden change in temprature cause expansion in the air which in turn leads to a sound wave or the crackling noise you hear.
  15. J

    Can the nucleus of an atom have an overall “neutral charge”

    well I can make one for you, all you have to do is make a choice ...and i 'll let you know the ingredients: so 1. Nucleus with absolute zero charge...or 2. Nucleus with relative zero charge There you go Sir, now how may i help you
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