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heathernelly

  • one year ago

:)

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  1. heathernelly
    • one year ago
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    @Hero do you know how to do this? :)

  2. heathernelly
    • one year ago
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    ooh, I did too :/ next time I will :D

  3. heathernelly
    • one year ago
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    okay, thanks! :) I'm tired too, I've been working on it like all day..ha, byee :D

  4. heathernelly
    • one year ago
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    okay, will do :D thank youu (:

  5. heathernelly
    • one year ago
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    @Hero heey (:

  6. heathernelly
    • one year ago
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    soo can you help me? :) hehe

  7. phi
    • one year ago
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    You have an equation using the equation t=k/p Your first step is figure out what k is, to do that, replace t and p with a pair of numbers that "go together" They give you one pair of numbers, the first line in your table. Can you find k?

  8. heathernelly
    • one year ago
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    yeah, but what would be the pairs for the others? like how do I figure it out? :/

  9. phi
    • one year ago
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    what is k ?

  10. heathernelly
    • one year ago
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    ooh, I don't know :/

  11. phi
    • one year ago
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    the first line says depth pressure time 0ft 1atm 60min they give you a p (1 atm) and time (60 min) use this info in t=k/p to find k

  12. heathernelly
    • one year ago
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    so 60=k/1 ..i would times both sides by 1?

  13. phi
    • one year ago
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    you could, but anything divided by 1 is itself, so just rewrite k/1 as k you get k= 60

  14. heathernelly
    • one year ago
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    ooh okay

  15. phi
    • one year ago
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    so make a note, your equation is t= 60/p

  16. phi
    • one year ago
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    now to use this equation, you need to find the pressure at each depth in the table. Activity 1 gives an equation for how to find the pressure at a depth. Can you use it to fill in the pressure column ?

  17. heathernelly
    • one year ago
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    the d=33+1 equation? :S

  18. heathernelly
    • one year ago
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    i mean d/

  19. phi
    • one year ago
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    yes, but get the details right. What is the equation for finding P ?

  20. heathernelly
    • one year ago
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    p=d/33+1? i don't know :(

  21. phi
    • one year ago
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    yes, that is it.

  22. phi
    • one year ago
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    They say The pressure P (atm) varies with depthd( ft) according to the equation P= d/33 + 1 You have to be able to read complicated sentences. It's not math, but reading. but to continue, for each depth in your table, you use this equation to find the pressure at that depth. for example, for d=0 ft (depth is zero feet) , replace d with 0 in the equation P= 0/33 + 1 = 1 P is 1 at depth= 0 feet can you fill in the rest of your depths with the pressure at that depth ?

  23. heathernelly
    • one year ago
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    yes! what about the time?

  24. phi
    • one year ago
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    one step at a time. Once you have the pressures filled in, you go back to the equation we figured out already, t = 60/p to find the time (in minutes)

  25. heathernelly
    • one year ago
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    you are brilliant! thank you so much phi...once again!!!! :D

  26. phi
    • one year ago
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    If you want, you can post your results so we can check them.

  27. heathernelly
    • one year ago
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    okay, will do :D!

  28. heathernelly
    • one year ago
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    p=33/33+1=2 t=60/2=30 hopefully I got this right? if I got that right then I'm sure the rest are :D

  29. phi
    • one year ago
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    looks good. btw, you will get fractions (or decimals) for depth=20,

  30. heathernelly
    • one year ago
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    :D thank youu

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