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msumner

  • 2 years ago

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

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

  2. modphysnoob
    • 2 years ago
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    |dw:1364609079923:dw|

  3. modphysnoob
    • 2 years ago
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    |dw:1364613658132:dw|

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

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

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

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

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

  9. Nubia9811
    • 2 years 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
    • 2 years 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
    • 2 years 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
    • 2 years 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
    • 2 years ago
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    can you do that alongside where E=M?

  14. modphysnoob
    • 2 years 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
    • 2 years ago
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  16. modphysnoob
    • 2 years ago
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    yes, we have to look for as mass get really big

  17. msumner
    • 2 years ago
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    now let us focus on the question: why?

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

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