Science & Mathematics - 20 September 2007

1. What is the chemical make up of phospholipids?

2. What is the compartmentalization in cells?

2007-09-20 13:27:00 · 1 answers · asked by Anonymous in Biology

,when I intend to start up a factory, after my undergrad? I have plans to create this factory in China that will export products back to US. So I also might do a minor in international business to increase my knowledge about the intricacies in global business. If I do successfully graduate with a engineering degree, would I be able to create products and eventually manufacture them? I don't know the details so if anyone can inform me, that'd be great.

2007-09-20 13:26:55 · 3 answers · asked by JL989 2 in Engineering

my science teacher told me to find out and im not sure what makes the earth change shape so please help

2007-09-20 13:26:01 · 6 answers · asked by Anonymous in Astronomy & Space

If you know an algebraic method to solve this one, I'd like to know how you do it.

I got 2 as a root but I am stucked in the 4th grad quotient of dividing the equation by x-2

x^5 + 2x^4 - 11 x^3 - 22 x^2 + 24 x + 64 = 0

Please, avoid general remarks like: "Use synthetic division" or "Use the rational roots theorem" (I already checked all of them and there are none) or "Take derivatives and see what the extrems are". I already did this too and I already know in which interval the roots more or less are, I found them in an approximated way too.

The thing is that this questions is in an exam I have to solve and I'd like to know how the equation is supposed to be solved, and if there is a algebraic way to do this. And no, computers aren't available during the exam.

Thanks

2007-09-20 13:26:00 · 5 answers · asked by MathTutor 6 in Mathematics

V/d = E

I know d is distance, but what are V and E? Energy and voltage?

2007-09-20 13:25:20 · 2 answers · asked by Curious 1 in Physics

three ballot boxes are connected by cords, one of which wraps over a pulley having negligible friction on its axle and negligible mass. The masses are mA = 27.0 kg, mB = 42.0 kg, and mC = 13.0 kg. When the assembly is released from rest, (a) what is the tension in the cord connecting B and C, and (b) how far does A move in the first 0.290 s (assuming it does not reach the pulley)?

2007-09-20 13:23:33 · 1 answers · asked by Samuel Tewolde 1 in Physics

PA - mushrooms (grown in mushroom mines)

2007-09-20 13:23:32 · 13 answers · asked by butch 5 in Agriculture

The answer I got was -16 is this correct or did I get it wrong

2007-09-20 13:19:35 · 10 answers · asked by m&m 1 in Mathematics

Hi, I am currently a junior in MechE. I picked mechanical because it's the 'ever green' engineering field, meaning it's the most versatile in job selection and it allows you to do a master's in just about any engineering discipline. But after looking at some coursework that MechEs and ChemEs share (Thermodynamics, Fluid Mechanics, Heat Transfer, etc.), I realized that I am more passionate about those subjects and chemistry subjects. I go to a top 5 MechE school, and I've talked to an advisor from the ChemE department. She told me the only coursework that they require for you to make up is Transport Processes and Reactor Engineering. I was surprised because I thought more would be required (like Orgo, separations, etc.). So, finally, here's my question: what additional coursework would you RECOMMEND that I make up? If ChemEs in the field are reading this, which subjects from your courses do you find to use the most and are most helpful to your work? Thank you.

2007-09-20 13:18:42 · 2 answers · asked by Anonymous in Engineering

When the world spins the clouds move...or is it that the world spins....and the clouds dont move?

2007-09-20 13:18:11 · 7 answers · asked by Anonymous in Weather

1 - 2/3y = 9/5 - y/5 + 3/5 Solve for Y

2007-09-20 13:17:52 · 1 answers · asked by KitKatbar 2 in Mathematics

when do i flip the sign of inequalities?
i know that its one dividng or multiplying by negative but im confused.

which equation would you have to slip the sign in?

1) -2x<20

or

2) 2x<20

so which problem would i have to switch the sign in?

thank youuu (:

2007-09-20 13:15:42 · 7 answers · asked by gleek. 3 in Mathematics

2007-09-20 13:14:44 · 5 answers · asked by Anonymous in Biology

I don't need explainations...I just want to know why they test only white mice.

2007-09-20 13:05:36 · 4 answers · asked by L 3 in Zoology

2007-09-20 13:02:00 · 3 answers · asked by kamal T 1 in Astronomy & Space

2007-09-20 13:01:43 · 5 answers · asked by Anonymous in Weather

2007-09-20 12:56:31 · 2 answers · asked by Anonymous in Biology

A ball is thrown vertically upward (assumed to be the positive direction) with a speed of 16.0 m/s from a height of 3.0 m.
(a) How high does the ball rise from its original position?
m
(c) How long does the ball take to hit the ground after it reaches its highest point?
s

2007-09-20 12:53:32 · 1 answers · asked by NiNi 2 in Physics

x^4+x^3-10x^2+x+1
>_> what are the roots of that.

2007-09-20 12:50:35 · 1 answers · asked by Henry Chan 1 in Mathematics

place?

2007-09-20 12:50:21 · 1 answers · asked by Anonymous 2 in Biology

2007-09-20 12:49:36 · 5 answers · asked by nicelittlestitch626 1 in Chemistry

a pipe of legible diameter is to be carried Horizontally around a CORNER from a hallway of 8ft into a hallway of 4ft wide. Whats is th maximum length that that pipe can have?
without using calculus

follow the link to see the pic
http://img468.imageshack.us/my.php?image=scan001001fx7.png
or
http://aycu37.webshots.com/image/27916/2005320442045045817_rs.jpg

please i realy need this

2007-09-20 12:49:06 · 4 answers · asked by The Answer 3 in Mathematics

A boat takes 2.70 hours to travel 35.0 km down a river, then 5.90 hours to return. How fast is the river flowing?

2007-09-20 12:42:45 · 1 answers · asked by Anonymous in Physics

2) rocket powered sleds are used to test the responses of himans to acceleration. Starting from rest, one sled can reach a speed of 444m/s in 1.80s and can be brought to a stop again in 2.15s.

a) calculate the acceleration of the sled when starting and compare it to the acceleration due to gravity, 9.80m/s^2.

b) Find the acceleration of the sledwhen braking and compare it to the magnitude of the acceleration due to gravity.

If you answer all questions, I would be very pleased and give you 10 free points thank you for solving the hard questions

2007-09-20 12:42:12 · 1 answers · asked by Anonymous in Physics

2007-09-20 12:39:11 · 1 answers · asked by nala 1 in Mathematics

2007-09-20 12:38:16 · 8 answers · asked by Anonymous in Mathematics

2007-09-20 12:35:49 · 4 answers · asked by musicrow21 3 in Other - Science

what is condensation reaction???
which organic compound carries the most energy???

extra points to the one who answers the BEST not FIRST (:

2007-09-20 12:34:04 · 2 answers · asked by Becky 2 in Biology

2007-09-20 12:31:27 · 2 answers · asked by mathfan09 1 in Mathematics

why does bleach "drain" away the color of things

2007-09-20 12:31:07 · 4 answers · asked by the princess of the world 3 in Other - Science