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heathernelly

  • 2 years ago

:)

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

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

  3. heathernelly
    • 2 years 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
    • 2 years ago
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    okay, will do :D thank youu (:

  5. heathernelly
    • 2 years ago
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    @Hero heey (:

  6. heathernelly
    • 2 years ago
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    soo can you help me? :) hehe

  7. phi
    • 2 years 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
    • 2 years ago
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    yeah, but what would be the pairs for the others? like how do I figure it out? :/

  9. phi
    • 2 years ago
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    what is k ?

  10. heathernelly
    • 2 years ago
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    ooh, I don't know :/

  11. phi
    • 2 years 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
    • 2 years ago
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    so 60=k/1 ..i would times both sides by 1?

  13. phi
    • 2 years 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
    • 2 years ago
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    ooh okay

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

  16. phi
    • 2 years 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
    • 2 years ago
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    the d=33+1 equation? :S

  18. heathernelly
    • 2 years ago
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    i mean d/

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

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

  21. phi
    • 2 years ago
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    yes, that is it.

  22. phi
    • 2 years 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
    • 2 years ago
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    yes! what about the time?

  24. phi
    • 2 years 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
    • 2 years ago
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    you are brilliant! thank you so much phi...once again!!!! :D

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

  27. heathernelly
    • 2 years ago
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    okay, will do :D!

  28. heathernelly
    • 2 years 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
    • 2 years ago
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    looks good. btw, you will get fractions (or decimals) for depth=20,

  30. heathernelly
    • 2 years ago
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    :D thank youu

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