Calling all science people please!

Discussion in 'The Sump' started by gaz19, 13 Jun 2008.

  1. gaz19

    gaz19

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    howzit guys

    im writing my science exam on wednesday. i understand most of it just stuck with one section:electrostatics. i know what im doing, and what every thing means, i just dont know how to convert coulombs in micro colombs/milicolombs/nanocoloumbs or pica colombs.

    1colomb =
    1x10^-3 -milicolombs
    1x10^-6 -micro colombs
    1x10^-9 -nano colombs
    1x10^-12 -pica colombs

    is the above right?

    now i get stuck when i get a question as follows:

    1.1) 10nanocolombs= ....microcolmbs
    ect

    any 1 got and easy way how to work these out?:wave2:

    thanks
    gareth
     
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  3. gaz19

    gaz19 Thread Starter

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    im only in grade 10
    so simple terms please
     
  4. lappiesreef

    lappiesreef

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    HI Gaz

    Those look right (but it is Friday...) :whistling:

    I do it with zero's or commas...

    There is three zero's/comma's inbetween each step right 3-6-9-12...So make it like a little ladder...
    So if you move 1 step up the ladder like Nano to Micro it is three 000/commas to the left. If it is down the ladder it is to your right...

    So 10 to move one step up your ladder it is three to your left 1,0; 0.01 and finally 0,001.

    Hope it helps...I use to draw little commas while I do this...Jut remeber with like a 10...the comma first moves inbetween the 1 and 0 before it goes before the 1...

    Good luck with the studies mate ;)
     
  5. jacquesb

    jacquesb Retired Moderator

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    Ditto - Lappies.....
    Gaz - that's exactly the way I usually count figures in the millions and billions / trillions ranges... :)

    Just count the number of 0's from right to left...
     
  6. lappiesreef

    lappiesreef

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    Yeah you get used to it afterawhile... I have to do it everyday in the lab with volume calculations...

    to think, I was one of those guys in science and math class that went, when am I ever going to use THIS in REAL life... :whistling:
     
  7. jacquesb

    jacquesb Retired Moderator

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    :)
    I too had Maths, Science and economics...

    I only STARTED to learn this stuff when I had to calculate bytes, kilobytes, megabytes, and gigabytes (and soon terabytes) LOL! :thumbup:
     
  8. lappiesreef

    lappiesreef

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    Wish I had terabytes :p I had animal husbandry instead of economics... :razz:
    Isn;t the capacity of the human brain 4 tera bites? well useless info, but still...
     
  9. gaz19

    gaz19 Thread Starter

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    and instead of writing 0.001 you can right it as
    0.001x10^-6
    =1x10^-9

    doing the ladder thing now and it works much better!
    thanks!
     
  10. lappiesreef

    lappiesreef

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    You've got it :thumbup:
     
  11. gaz19

    gaz19 Thread Starter

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    hmmm:slayer:

    something i have been noticing. if you want to get from
    say 4.8nC to mC.
    can you just say 4.8x10^-3?

    mC = 10x^-3
    nC= 10x^-9

    what if you want to get from mC to nC.
    and mC=2.1
    would this be true, 2.1x10^-9?
     
  12. lappiesreef

    lappiesreef

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    I'm afarid not.

    See the thing is...if you say something is 4.8nM that meens it is 4.8 10x^-9
    So you would still have to move the comma to change the unit...it's like making ml into L. 10 ml is always 10 ml until you change the unit to L. Then it is not 10 L. same way 4.8 nM is always 4.8 nM.

    Look at the 10x^-9 as a unit. Like meter or litre. So instead of writing nM you owuld write 10x^-9....get it.
     
  13. gaz19

    gaz19 Thread Starter

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    sort of. so 10x^-? is like a constint, it wont change.to get it to change you move the commer.once you have moved the commer, do you then right you answer with 10x^-6 (if say they asked for micro)?
     
  14. lappiesreef

    lappiesreef

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    Thats It... It represents the amount of zero's. So instead of writing all the zeros we use those as place markers/units,
    it friday so this bit is under correction...Jac double check me here please...

    So 1 10x^-6 is the same as 0.000 000 1. But instead of all the zero's you
    write 1 10x^-6...
     
  15. gaz19

    gaz19 Thread Starter

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    wouldnt it be 0.000 001. thats six figures after the " . " i could be wrong on this
     
  16. lappiesreef

    lappiesreef

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    I believe you are correct sir ;)

    So you get the general idea, right?
     
  17. gaz19

    gaz19 Thread Starter

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    getting the hang of it!

    thank you so much!
    sent the last 2hrs on google search for this.
    going to do all my past excercises now this way, will let you know how it works. thanks!
     
  18. lappiesreef

    lappiesreef

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    Great Stuff, Forum addicts for life
    :peroni: only when you older!!
     
  19. jacquesb

    jacquesb Retired Moderator

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    :) Cool Gaz!

    Brilliant assistance Lappies! Thanks! Do you feel SLIGHTLY better now that you were able to help somebody?
     
  20. gaz19

    gaz19 Thread Starter

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    come on:1:
    :thumbup:
     
  21. lappiesreef

    lappiesreef

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    Yes, thanks Jacie :)

    Maybe the Friday mood is kicking in....I even told my staff they can go home once the sequencer is up and running, which should be in the next 10 min or so :)

    I want to work on a new DIY skimmer this weekend...
     
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