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J.C.MacSwell

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Everything posted by J.C.MacSwell

  1. I had similar thoughts. Not so much just "species as a whole" (though it could be as well, and perhaps extend even further) but more so those close to you and your community which would likely, evolutionary/statistically speaking, share similar genes compared to "the competition". This is assuming the "suicide gene", or genetic make up, is at least in part positive and not a defect. Not exactly the same, but risking or sacrificing one's life might be in part influenced by the same genes…or even making sacrifices such as adoption or other philanthropy. This could be totally wrong and of course fortunately we don't need genetics as motives for all our actions. (though it may help if there is good alignment)
  2. Not speaking from experience or expertise, but I do know safe handling and proper disposal is very important to avoid inhalation, absorption or ingestion.
  3. No true Scotsman would ask such a question...
  4. If ever I want to go to the moon I'll just tug on my boot laces. I'm not quite strong enough to take off yet, but if I was actually on the moon I could take off no problem. I can easily handle 1/6 of my weight.
  5. How would flattening of the pipes effect their pressure rating? I am assuming they are used at the same pressure as the rest of the system for household use.
  6. It would certainly increase the friction (and wear) of the barrel, and reduce the rifling effect It should slow it down. Some rifles have twist gain down the barrel. I suspect if from the halfway point the twist was abruptly reversed the bullet might not manage to change spins.
  7. I can't believe Myth Busters couldn't figure it out. If they had used a spinnaker (perimeter of sail angled back) instead of a square sail (perimeter of sail directed at 90 degrees) it would have been much more effective.
  8. up wind legs?
  9. grams should read Kg (which you obviously knew when you calculated) but where did the 800 grains come from to give you the mass? Is that a standard bullet for that rifle, on which the 22,000 foot pounds is based?
  10. It looks like it may have a dent in it at about 11 o'clock. Can you push on the bottom of it?
  11. Sounds like an oil canning effect from a reversal of pressure or possibly temperature on the almost flat bottom of the kettle.
  12. counteract =/= interact
  13. I would have to agree that some potential for something had to exist…though I wonder if "exist" is meaningful with respect to that point in…ah…in... (fill in a new word here)
  14. I know exactly the formula you need…it's…let me see…I knew it…something to do with time…and retention…I had it…aaahhh... …I got nothin'
  15. Equal but opposite rotation there would be 2 more, but shorter, days in the year. Same if the revolution was opposite, with the same current rotation.
  16. It would tend to flatten more at the poles. Tides would likely increase (depending on natural frequencies) or at least change. Volcanic activity and Earthquakes would likely increase.
  17. Nothing really…but the Earth isn't quite as smart as Wile E. Coyote. Eventually it will figure it out though, gravity will take over, and the plummet to the Sun will quickly follow.
  18. Yes See Janus's post for how much in post #8 of your earlier thread: http://www.scienceforums.net/topic/90227-how-to-destroy-the-earth/ I didn't check the math but…it's Janus…so probably pretty accurate
  19. How do you damage a molten core? I'm afraid you would still need a lot of energy, nothing really critical to pinpoint and shatter. You may have to look elsewhere in your Noble Quest to free the World of all pain
  20. Gary Larson might suggest you greet Aliens in typical human fashion... 209679_f520.jpg
  21. I think he is asking if it would increase, or not. It is not necessary to quantify it for that purpose.
  22. Secondary bonding is much better, and it can sometimes reduce the labour costs. As Acme pointed out, this would be appropriate for later additions, where the installation was not done with the initial setting of the concrete.
  23. The atoms don't reach equilibrium, the theoretically isolated system does. They would maintain a velocity distribution that would emit/receive a black body distribution of photons for whatever temperature the system has settled to. Not really… might be some lump of iron at 2.73 degrees K floating around somewhere
  24. Yes, an isolated system it will tend to a maximum entropy at equilibrium, quantum and statistical fluctuations aside.
  25. These statements are not equivalent. You can consider yourself loosely correct if it makes you feel better. You are only wrong in a more rigorous sense…one that is used by most physicists.
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