Recent content by jsbhk

  1. J

    Can a Flashlight Propel an Astronaut Back to the Shuttle?

    220Newton Meter per hour = 150Kg x 20M/time/time 220N Meter per hour = 3000/time /time 220N = 3000/time/time / Meter per hour 220 = 3000 /time (in hour) 3000 / 220 = time (in hour) time = 13.6 hours! your text answer is wrong. LOL
  2. J

    Can a Flashlight Propel an Astronaut Back to the Shuttle?

    Hey, I just checked my textbook, 1W=1 Newton meter per second! 220W = 220 Newton Meter Per Second!
  3. J

    Can a Flashlight Propel an Astronaut Back to the Shuttle?

    I forgot watt is energy in Newton per hour? If so, 220w is 220N/hour, LOL, wild guess, shoot me if got it wrong. 220N per hour = 150 x 20/time square 220N per hour = 3000 / time square sqaure root 220N per hour = 3000 / time 14.832 per hour = 3000 / time 3000 / 14.832 per hour =...
  4. J

    Can a Flashlight Propel an Astronaut Back to the Shuttle?

    the light that a 220w flashlight generates does not create thrust, but the heat it produces will give you a thrust! She will arrive at the shuttle eventually if she doesn't run out of oxygen. We can look at Newton's Law F=m x a We don't know the Force produced by the flashlight, otherwise...
  5. J

    Could a Magnetic Car Revolutionize Transportation?

    Sorry, rethinking it again, I was wrong, because when the magnets are closer, that means the attraction force is getting much greater, the beam or springs need much more energy to fight off the magnetic power, they cancel each others out, that means no more or very little energy left to drive...
  6. J

    Could a Magnetic Car Revolutionize Transportation?

    I understand your mate's idea, that must involve the smart-breaking-system: front wheels break and stop, then let magnet attract to increase the beam tension and store the energy on the beam or even springs, then break the back wheels and then release the front wheels - let the beam or springs...
  7. J

    Satellite Help: Will it Stay on Earth's Orbit Forever?

    in other words, if an artificial satellite is circling the Earth, without any air friction, will it revolve forever without any thrust? Thanks!
  8. J

    Satellite Help: Will it Stay on Earth's Orbit Forever?

    Moon is under the Sun's gravitational pull, some scientists consider it not the satellite of Earth because its barycenter is not in the center of Earth. Some even called Earth-Moon a twin star. We don't want to go into it. Just wanted to know will artificial satellite centrifugal force need...
  9. J

    Satellite Help: Will it Stay on Earth's Orbit Forever?

    Forgive my rusty English. But I really need urgent and Professional help, teachers and professors, please: A satellite has been put on Earth's orbit at a high speed, (forget atmosphere friction, forget moon attraction, forget sun gravity), theoretically, without any further thrust, will it...
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