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Math Help - scientific exponent

  1. #1
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    scientific exponent

    Typical mass of polypeptide is between 1000 and 10 000.

    How much bigger than this range of sizes is a polypeptide of 6.864*10^29???
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by orsonik View Post
    Typical mass of polypeptide is between 1000 and 10 000.

    How much bigger than this range of sizes is a polypeptide of 6.864*10^29???
    i'm not sure i get the question, wouldn't we just take the difference here?

    so it would be between 6.864 \times 10^{29} - 10000 and 6.864 \times 10^{29} - 1000

    (i leave simplifying those answers to you)
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  3. #3
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    Quote Originally Posted by orsonik View Post
    Typical mass of polypeptide is between 1000 and 10 000. Mr F asks: UNITS?????

    How much bigger than this range of sizes is a polypeptide of 6.864*10^29???
    If you're looking for order of magnitude argument, then 6.864*10^29 ~ 10^30. 1000 = 10^3 and 10000 = 10^4 ...... So a polypeptide of mass 6.864*10^29 mass units is roughly 10^26 to 10^27 times larger than the typical mass.

    A feel for order of magnitude is a very valuable and very neglected skill - especially in the sciences. As is giving the unit associated with a number ...... Sadly the focus is all too often solely on getting a number, sod the unit ....... All comment welcome.
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