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msumner

  • one year ago

why do bigger animals use energy more efficiently than smaller ones?

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  1. msumner
    • one year ago
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    \[E=M^{\frac{ 3 }{ 4 }}\]

  2. modphysnoob
    • one year ago
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    |dw:1364609079923:dw|

  3. modphysnoob
    • one year ago
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    |dw:1364613658132:dw|

  4. modphysnoob
    • one year ago
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    by the way , I think you meant to say |dw:1364614621701:dw|

  5. msumner
    • one year ago
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    it is an equation provided from the fractal study of energy consumption efficiency by mass

  6. modphysnoob
    • one year ago
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    because unit for mass and energy doesn't match up hence they can equal each other

  7. msumner
    • one year ago
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    so our M is not mass :X since mass is small m in physics

  8. modphysnoob
    • one year ago
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    http://en.wikipedia.org/wiki/Kleiber's_law q0 ~ M¾.

  9. Nubia9811
    • one year ago
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    Because Bigger animals need more energy to survive and smaller animals don't need as much because of their size.

  10. msumner
    • one year ago
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    no… M is still mass in that equation E is the energy consumption in calories? if we say that is the rate of metabolism (q) then what amount of energy required - how much calorie per gram? I think I stumbled on a very complicated living system processes :/ and may need a decade to get to fully understand

  11. msumner
    • one year ago
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    @Nubia9811 we know that bigger animals require more energy, but we are talking about the rate of efficiency. Meaning that big animals, like elephant, use energy more efficient than small ones like mouse. Let us say we need 10,000 mouse to be the same mass of an elephant, the sum of consumption of energy will be higher for the mouse compared to one elephant though they of the same mass.

  12. modphysnoob
    • one year ago
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    plot of e=m^(3/4) http://www.wolframalpha.com/input/?i=Plot%5Bx%5E%283%2F4%29%2C%7Bx%2C0%2C50%7D%5D

  13. msumner
    • one year ago
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    can you do that alongside where E=M?

  14. modphysnoob
    • one year ago
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    yes, http://www.wolframalpha.com/input/?i=Plot%5Bx%2Cx%5E%283%2F4%29%2C%7Bx%2C0%2C5000%7D%5D of course , we can see , it is much lower as mass increase

  15. msumner
    • one year ago
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  16. modphysnoob
    • one year ago
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    yes, we have to look for as mass get really big

  17. msumner
    • one year ago
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    now let us focus on the question: why?

  18. modphysnoob
    • one year ago
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    that would be a deep question , wouldn't it?

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