Science & Mathematics - 21 September 2007

2007-09-21 17:41:04 · 9 answers · asked by Anonymous in Zoology

What is the value of A in the equation:
-9+-9i = A x e ^ (i \phi)

What is the value of phi in the equation:
4.5 + 3.6i = A x e ^ (i \phi)
answer in degrees or specify the unit "rad" to give it in radians

regards,

2007-09-21 17:39:12 · 2 answers · asked by dark88 1 in Mathematics

2007-09-21 17:34:50 · 10 answers · asked by jatin b 1 in Mathematics

You are traveling at 110m/s.
An apple over your head is moving 110m/s.

How fast is the apple traveling relative to you?

2007-09-21 17:34:50 · 3 answers · asked by XzoeyX 2 in Physics

2007-09-21 17:33:48 · 7 answers · asked by luckeyme3 1 in Biology

seems kinda silly to me, since this would decreas fuel consumpotion by a large factor

2007-09-21 17:32:29 · 8 answers · asked by dragongml 3 in Astronomy & Space

2007-09-21 17:25:50 · 1 answers · asked by Anna Q 1 in Medicine

i need to find
limit
x-> 2.5

25 - 4x^2 / 2x + 5

can i do this on a calculator?

2007-09-21 17:23:32 · 3 answers · asked by Anonymous in Mathematics

2007-09-21 17:17:41 · 4 answers · asked by nick m 1 in Botany

You are sitting in a bus that is traveling along a straight, level road at 110 m/s. How fast are you traveling relative to the road? Answer in m/s.

2007-09-21 17:09:40 · 4 answers · asked by XzoeyX 2 in Physics

this is homework please help me!

2007-09-21 17:07:19 · 13 answers · asked by Tracey Fahnestock 1 in Mathematics

limit as x approaches pi over 4

(6-6tanx)/(sinx-cosx)

Viewed here:
http://www.webassign.net/www30/symImages/8/7/963e6bbedc1066a3f330318bdbbc5f.gif

2007-09-21 17:06:25 · 2 answers · asked by ILuvTaraReid 2 in Mathematics

2007-09-21 17:05:37 · 3 answers · asked by Anonymous in Mathematics

Question One:(2,4) and (-6, -3)


Question Two: (2,1) and (2, 7)

2007-09-21 17:03:50 · 7 answers · asked by yeahyeahyeah 4 in Mathematics

Cc is centimetres cube.

2007-09-21 17:03:12 · 4 answers · asked by kooldude 1 in Physics

2007-09-21 17:02:29 · 5 answers · asked by Anonymous in Botany

2007-09-21 17:01:28 · 16 answers · asked by Jack K 2 in Astronomy & Space

What would you observe if a precipitate forms when you mix two solutions? Like how do you know a precipitate has formed (characteristics?). Thanks.

2007-09-21 16:59:16 · 3 answers · asked by me 3 in Chemistry

2007-09-21 16:58:46 · 3 answers · asked by chum mink 1 in Mathematics

Need more understanding on some more inequalaties and how you get them( dont think im stupid because i could do these using basic logic, its jsut that i want to know how to use the formulas to solve them.2 - x = 2 on this one i add 2 to both sides and end up with x = 4. i know this isnt the right answer. The next one is -8 - b = 11 i add 8 to 11 and get b = 19 but this isnt the right answer and i know this. how do i know if i add a ngative to the number on the other side, or add a positive, or vice versa. please help me out with this people. thank you everyone.

2007-09-21 16:55:20 · 9 answers · asked by Anonymous in Mathematics

2007-09-21 16:55:13 · 5 answers · asked by vivica7604 1 in Geography

I'm doing a project to detect the human head inside a helmet.

2007-09-21 16:52:17 · 1 answers · asked by Shiv 1 in Medicine

or is it because of genetics that I like these things?

2007-09-21 16:51:22 · 8 answers · asked by PediC 5 in Medicine

true or false?

2007-09-21 16:50:42 · 12 answers · asked by luvurfingers 2 in Astronomy & Space

It claims we've already landed on Mars.

2007-09-21 16:50:04 · 3 answers · asked by Ryan K 4 in Astronomy & Space

If you are going to bake something that needs to cook at 200 degrees celsius but your oven is calibrated in farenheit, what temperature do you use?

2007-09-21 16:43:59 · 11 answers · asked by LydonPuggles 2 in Mathematics

the limit as x approaches 8

function: sin (x-8)/(X^2-2x-48)

you can view it here:
http://www.webassign.net/www28/symImages/5/1/1a1872403cd882533309a7f2a07592.gif

Thanks. If you could please explain or show work, I'd appreciate it.

2007-09-21 16:42:19 · 3 answers · asked by ILuvTaraReid 2 in Mathematics

2007-09-21 16:41:16 · 6 answers · asked by yeahyeahyeah 4 in Mathematics

2007-09-21 16:40:03 · 5 answers · asked by Anonymous in Medicine

The other day, I was plugging in the fryer to give my first shot at making sweet and sour chicken, and the outlet kinda sparked at me. I was thinking about this just earlier and started wondering: why does electricity usually appear to be bluish? I mean, I know it has to do with electrons moving between atoms and whatnot, but why is itblue??

2007-09-21 16:39:24 · 4 answers · asked by Anonymous in Other - Science