Recent content by rhenretta

  1. R

    How can I solve a^i=b in Objective C?

    Thanks chiro :)
  2. R

    How can I solve a^i=b in Objective C?

    My math skills are failing me, and I was hoping one of you could help me with this real quick.. I need to solve for i: a^{i}=b a in this case is based on the interval in the musical scale, so a = 2^{\frac{1}{12}} I have to solve this in objective c, and apparently it doesn't let me...
  3. R

    Calculating Heat Energy Released in Ozone Decomposition Reaction

    Am I on the right track? I looked up the energy of the covalent bonds, and in the destruction of ozone, there is a loss of a single covalent bond between 2 oxygen atoms. Therefore the energy released would be 146 kJ / mol?
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    Calculating Heat Energy Released in Ozone Decomposition Reaction

    I have been doing some research on ozone recently, and I have a question that none of my resources have answered... The following reaction is an exothermic reaction, but how would I calculate the amount of heat energy is released? O_{3} \underbrace{\rightarrow}_{uv\ light} O_{2} + O...
  5. R

    Function with point of resistance

    My maths is failing me. Take f(x), where f(x) wants to equalize at a value of 3,000,000. If it goes above, there is exponential resistance bringing it down, and as it goes below there is exponential growth driving it up. What would f(x) look like? This is driving me nuts!
  6. R

    The Physics of Fire: Understanding Ignition & Oxygen

    Exactly what I wanted, and being Feynman is all the better. Thanks
  7. R

    The Physics of Fire: Understanding Ignition & Oxygen

    Does anyone know a good resource that describes the physics of fire (not the album)? I understand the chemistry of it, breaking apart of hydrocarbons, and combining them with oxygen, but I have been trying to figure out what is actually happening on the atomic level. What is an "ignition...
  8. R

    What is the Earth's orbital speed around the sun?

    Oh, now I feel bad for you ;-), how about this one
  9. R

    What is the Earth's orbital speed around the sun?

    And because it is such an appropriate reward for the correct answer:
  10. R

    What is the Earth's orbital speed around the sun?

    I thought the same thing, being an imperialist scum, I did my calculations to mph, and came up with over 64,000 mph. It wasn't until yesterday I actually verified my answer (67,000 mph). There is something very satisfying about math
  11. R

    What is the Earth's orbital speed around the sun?

    Technically, your answer assumes a perfectly circular orbit, but given the lack of additional information I can't fault you there
  12. R

    What is the Earth's orbital speed around the sun?

    far too quick, now I need to come up with another problem (admittedly, I was tempted to put it in general math)
  13. R

    What is the Earth's orbital speed around the sun?

    I was watching a documentary a couple nights ago, and it caused me to start doing random calculations. Granted the information is easily accessible online, but what is the fun in that. Here is the problem Given light takes 8 minutes to reach the Earth from the sun, at what speed is the...
  14. R

    Virtual Particles and Hawking radiation

    hah! got it, thanks :)
  15. R

    Virtual Particles and Hawking radiation

    That sounds like the perfect paper to read to answer my question... I don't suppose there is any resource out there to read these papers without having to pay $88
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