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  1. Answers
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    890

    Thank you very much :)

    Thank you very much :)
  2. Answers
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    890

    Problem with Spider Mites(Phytoseiidae).

    Hi all I develop two types of wasps:
    1)Muscidifurax raptor
    2)Spalangia cameroni
    And now I have a real problem with Spider Mites(Phytoseiidae).
    I see them mostly after 3-5 days after the wasps...
  3. Answers
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    1,028

    Meiosis-Number of chromosomes

    In the picture you can see 2 table.
    Table-1 is the original table that I got on my question,and table-2 is my answer.
    I would like to know if I correct.

    In this link the picture is more clear:...
  4. Answers
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    1,244

    Here is the picture without the link.

    Here is the picture without the link.
  5. Answers
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    1,244

    Meiosis-Number of chromosomes

    In the picture you can see 2 table.
    Table-1 is the original table that I got on my question,and table-2 is my answer.
    I would like to know if I correct.

    http://imgur.com/RIafx

    Thanks.
  6. Answers
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    2,504

    OK. Thank you very much.

    OK.
    Thank you very much.
  7. Answers
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    2,504

    Yes but I was not sure if this components of the...

    Yes but I was not sure if this components of the waste are allows to create compost.

    What you think is the easiest and cheapest way to produce compost from these components ?

    Thanks for...
  8. Answers
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    2,504

    What can I do with the organic waste

    Hello. I work at a biologic company,and we have an organic waste that we just throw it in the trash. So this is the components of the waste:
    1) bran (that was digested by the maggots) ...
  9. Answers
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    552

    * mean did it with the Y-delta transform

    * mean did it with the Y-delta transform
  10. Answers
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    552

    find the Electric current

    given a electrical network (in the picture)
    I asked to find all the current in each resistor.
    so for the start I found the RT,I got RT=3.5-ohm (I did it with the Y-Δ transform).
    then I calculate...
  11. Answers
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    730

    Yes you are correct it was my mistake :)

    Yes you are correct it was my mistake :)
  12. Answers
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    730

    ohh yes yes now I see it, my mistake OK I solve...

    ohh yes yes now I see it, my mistake OK I solve it now.

    so yes R2=3.


    so I get R:2,1=3*3/3+3=1.5-ohm,now we know is in series with R3 so we get 1.5+1.5=3.00-ohm

    so Rcd=3-ohm this is the...
  13. Answers
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    "I see that in figure 1 you have R2= 3 ohms, but...

    "I see that in figure 1 you have R2= 3 ohms, but in figure 2 you show R2 = 9 ohms. Which is it?"

    well in both R2=9ohm and R1=3ohm.where I show R2=3 ohm?


    well so if you told that I have R2...
  14. Answers
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    730

    Oh again is happened sorry :)

    Oh again is happened sorry :)
  15. Answers
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    730

    find the resistance of CD (Rcd)

    in the picture you can what I did till I stuck.

    NO.1 is the source, and NO.2 is after I found the equivalent resistance R-5,6,7 (which is in parallel).

    but now I think R2 and R1 is also...
  16. Answers
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    1,257

    Ok now I got it. Thank you very much.

    Ok now I got it.

    Thank you very much.
  17. Answers
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    1,257

    that OK :) .so you can tell me if the final...

    that OK :) .so you can tell me if the final answer is Uab=3v?

    thanks so much for your help and for your time.
  18. Answers
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    1,257

    *made it

    *made it
  19. Answers
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    1,257

    wow you made is clear now :) now I understand it....

    wow you made is clear now :) now I understand it.
    so as u told beofoe V = IR = 1 amp x 3 ohms = 3 volts

    so this is the final answer Uab=3v ?
  20. Answers
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    1,257

    Oh yes you correct. But I have to ask why u took...

    Oh yes you correct.
    But I have to ask why u took the 3-ohm resistor voltage that spans points a and b:
    And not the 6 ohms resistor that also spans points a and b ?
  21. Answers
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    1,257

    yes I get 6 ohms which is in parallel with the...

    yes I get 6 ohms which is in parallel with the remaining 6-ohm resistor so is equal to 6*6(12)=3ohms
    and this equivalent resistance is series to the last 3 ohms resistor and I get RT=6 ohms

    then...
  22. Answers
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    1,257

    well I find the equivalent resistance that can...

    well I find the equivalent resistance that can replace the 6 ohm and the 3 ohm (they are parallel) so I get:
    6*3/(6+3)=2ohm.

    and I get a new electrical network (in the picture).

    my big problem...
  23. Answers
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    1,257

    Oh sorry. Here is it

    Oh sorry.

    Here is it
  24. Answers
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    1,257

    Find the electrical potential difference

    Given electrical network (in the picture).

    I asked to find the electrical potential difference between A and B. UAB
    I tried and not find the answer.
    I really need help.

    Thanks.
  25. Answers
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    sure I can show you. (A+C)(A+D)(B+C)(B+D)=...

    sure I can show you.

    (A+C)(A+D)(B+C)(B+D)=
    [(A+C)(A+D)][(B+C)(B+D)]=
    [AA+AD+CA+CD][BB+BD+CB+CD]=
    [A(1+D+C)+CD][B(1+D+B)+CD]=
    [A+CD][B+CD]=AB+ACD+BCD+CDCD=
    AB+CD(A+B+1)=
    AB+CD
  26. Answers
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    Proof the equation (Boolean algebra)

    given the equation (in the picture)

    I asked to Proof that the left side are equal to the right side.

    I know how to proof that the right side are equal to the left side,but not vice versa.
    ...
  27. Answers
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    Draw the Supply graph

    given the marginal cost is equal to: 1/2*x

    and I asked to Draw the Supply graph.

    in the picture you can see my tried.

    Hope you can help.

    thanks.
  28. Question: Marginal cost (MC)

    by pop000
    Answers
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    573

    Marginal cost (MC)

    If a manufacturer produces a quantity of which the marginal cost equals to the product's market price then his profits are definitely maxed?

    I think is correct but why is correct I not so get it....
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    When I say lump I mean pupa. Sorry about it.

    When I say lump I mean pupa.
    Sorry about it.
  30. Answers
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    How to Sieve a fly pupa from the sawdust

    Hello.
    I will start with tell you what I do so maybe is will be more easy for you to try to help :)

    Ok so what I do is breed a fly maggots with a bran.(I give them the barn as a food).
    After...
  31. tickle lol we are OK. Thanks for your answer.

    tickle lol we are OK.

    Thanks for your answer.
  32. Comment on tickle's post

    I can wait :)
    Is not a normal homework is more like experiment.
    And I ask very straight.

    Thanks
  33. Comment on Aurora_Bell's post

    Well is a experiment that I nned to do for my study.
    And I asked to try to Development of Spalangia Cameroni and Muscidifurax Raptor and then to see what is the effective of them on the flies.
  34. Comment on jcaron2's post

    Lol. Thanks for answer.
  35. Development of Spalangia Cameroni and Muscidifurax Raptor

    Hi.

    I looking in the internet some articles about the good way to Development of Spalangia Cameroni and Muscidifurax Raptor.

    So I found 1 article about it but is not gave me all the answer that...
  36. Question: Oviparity (fly)

    by pop000
    Answers
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    334

    Comment on Unknown008's post

    Hi. Many thanks I will check them.
    I hope is what I looking for.
    Again I want to thank you for your answer. :)
  37. Question: Oviparity (fly)

    by pop000
    Answers
    3
    Views
    334

    Oviparity (fly)

    Hello.

    I got from my teacher a homework to do some experiment about fly oviparity.

    So I tried it for 4 weeks,and now how do I make the fly produce more eggs?

    For example if there some food...
  38. Answers
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    Layser Engraver and Cutter

    Hello.

    I want to start a business in the field of laser engraving,but I have no experience in this sector.

    So I would like to know from where to start:
    What is the costs,etc.

    Thanks for...
  39. Answers
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    Comment on Unknown008's post

    OH I mean 8-2=6 mol ammonia gas now I can multiply it in 22.4
  40. Answers
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    Comment on Unknown008's post

    well at the start I got 6 mol hydrogen gas and 2 mol nitrogen gas sp I can do 6+2=8 - 2 mol ammoniagas= 5 mol now I can multiply it in 22.5 and than I get delta v? Is correct way?
    thank you.
  41. Comment on Unknown008's post

    :) yep
  42. Answers
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    work against the external pressure

    in the picture you can see the reaction.
    http://p1cture.me/images/23518895930282025474.jpg
    it's known that 2 mol nitrogen reaction with 6 mol hydrogen gas to create ammonia.
    what is the work...
  43. Comment on Unknown008's post

    not wrong, I just not know how to calculate it in my pocket calculator.
    if you are trying to calculate what I wrote in those formulas you get also 8.17 g/cm^3 ?
    just try to calculate as I write...
  44. Comment on Unknown008's post

    Well this formulas I got in my book.
    But anyway I solve it :)

    Thanks you :)
  45. Comment on pop000's post

    Is speak about Cu with radios 128pm
  46. OK I did it but: look on the picture I want to...

    OK I did it but:
    look on the picture I want to calculate it and I get as a result 21.2

    but I know the correct answer is 8.17g/cm^-3

    what you get?...
  47. Comment on Unknown008's post

    Yes I know in this formula I did mistake
  48. Comment on Unknown008's post

    "The volume (V) of the unit cell is equal to the cell-edge length (a) cubed."
    http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch13/unitcell.php
  49. Comment on Unknown008's post

    lol forgot about this formula.
    I just speak about the formula for length of the Edge :4r/sqrt3 is give us a
    and for the volume for unit cell =a^3 .
    you can see it in my former post up hree :)
  50. Comment on Unknown008's post

    OK thanks.
    Last thing what do say about my way?
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