Science & Mathematics - 15 January 2007

I live in SW part of Arizona and i'm not used to these icicle things they're sorta interesting.

2007-01-15 07:21:54 · 7 answers · asked by Anonymous in Weather

2007-01-15 07:21:51 · 4 answers · asked by zoka5538 2 in Mathematics

I know calcium is one, what are some others?

2007-01-15 07:19:19 · 9 answers · asked by firenzez1977 1 in Chemistry

A cross of TtBbRrnnAaff with a ttbbRRBbaaFf. How do you figure that stuff out mathmatically, without having to count each square

2007-01-15 07:19:08 · 2 answers · asked by stacy j 1 in Biology

2007-01-15 07:18:45 · 8 answers · asked by zoka5538 2 in Mathematics

2007-01-15 07:16:21 · 4 answers · asked by Allie 2 in Biology

First problem: z+4/6=3/2-2z+2/12 second problem: 5/-x-6=2/x third problem: x-3/x+1=x-6/x+5 fourth problem: 3a-2/2a+2=3/a-1 Having a very hard time understanding how to solve...help

2007-01-15 07:13:50 · 3 answers · asked by gail 1 in Mathematics

How is it provided to consumors?

will it be easy to assimilate to our lives?

does it work well with other forms of energy?

2007-01-15 07:13:46 · 2 answers · asked by Beanie 3 in Earth Sciences & Geology

Factor polynomial completely, given that the binomial following it is a factor of the polynomial.

x^3 + 2x^2 - 5x -6, x + 3

If you cannot help, I do understand, but please leave your nasty comments to yourself. This is a place to submit questions and get help and I truly need HELP with my algebra HOMEWORK! I'm not lazy nor am I trying to find the easy way out. I just simply need help! Thanks to all of you who are truly here to help.

2007-01-15 07:12:16 · 6 answers · asked by SweetnSpiceyBrown 2 in Mathematics

1) A 50 kg crate is pulled by a 300N force at an angle of 30 degrees to the horizantal. The Force of kinematic frictioin is 65N.
What is the acceleration of the box?
2) A 15kg block is being pulled up a ramp at an angle of 35 degrees with a tension force of 150N.
a) what is the x component of the force of gravity acting on the block on the ramp?
b) what is the acceleration

2007-01-15 07:09:07 · 2 answers · asked by crazed1511 1 in Physics

2007-01-15 07:07:18 · 4 answers · asked by zoka5538 2 in Mathematics

2007-01-15 07:07:17 · 4 answers · asked by Justin 1 in Chemistry

A wall 2m high x 1.2m thick has a unit weight of 24kN/m3.
It is subject to a horizontal load of 10kN/m run at a height of 0.7m.

Calculate the factor of safety against sliding if the coefficient of friction = 0.45

....I'm having trouble with this question and would appreciate any help I can get. Cheers.

2007-01-15 07:06:08 · 3 answers · asked by Anonymous in Engineering

2007-01-15 07:05:18 · 3 answers · asked by Anonymous in Mathematics

Together, M, B, and K, can do a job in 80 minutes. To do the job alone, M, needs twice the time that B needs and two hours more than K. How long would it take each to complete the job alone?

2007-01-15 07:04:00 · 4 answers · asked by deborah j 1 in Mathematics

2007-01-15 07:03:45 · 11 answers · asked by Anonymous in Geography

Is there a difference between these two and if so what

2007-01-15 07:02:21 · 3 answers · asked by pop c 2 in Engineering

2007-01-15 07:01:57 · 6 answers · asked by forgotten_65 1 in Mathematics

2007-01-15 07:01:45 · 3 answers · asked by Anonymous in Mathematics

My car has a 13.7 gallon tank. Assuming that gasoline is entirely made from octane(C8H18), how many POUNDS of CO2 would be froduced from my car each time I use a tank of gas? How many pounds of CO2 will produce from my car each year(I drive 21,500 miles each year)?
Some equalities you may find useful
- 1 lbs- 4536 kg
1 kg-2.205 lbs.
28.35g-3.785 liters
l inch-2.54 cm
density of octane-.855g/ml
my car averages 29.7 miles/gallon

use the following equation
C8H18 + 12 1/2 O2 --> 8 CO2 + 9H2O
if u can find the answer and show work, it would be greatly appreciated. Please hlp. thx It would be nice if u can show step by step using factor labeling or something

2007-01-15 07:01:13 · 2 answers · asked by coolphill517 1 in Chemistry

I understand factoring but i don't understand how the signs change.

-8+3(x-3)=-2

2007-01-15 07:01:07 · 7 answers · asked by Anonymous in Mathematics

[i got this wrong on a test and i just wanna know what the correct answer is and why]

A)equal masses and the same number of molecules
B)different masses and a different number of molecules
C)equal volumes and the same number of molecules
D)different volumes and a different number of molecules

[i put B but that was wrong]

2007-01-15 07:00:50 · 1 answers · asked by um yea hi 4 in Chemistry

how do i draw this..........using a chromosome number of 2 in parent cell draw cell cycle 2....and ......using a chromossome number of 5 in parent cell draw steps of cell cycle 1.....thx

2007-01-15 06:59:31 · 1 answers · asked by Anthony V 1 in Chemistry

I am doing a science fair project to see what wood has the best heat resistance (or you could think about it as "Which wood has the hardest time burning"). The woods that I am going to test are poplar, oak, pine and hemlock. I tried looking up fire properties for these woods, and I could not find anything. Please help!

2007-01-15 06:59:13 · 1 answers · asked by Anonymous in Botany

how do i draw this..........using a chromosome number of 2 in parent cell draw cell cycle 2....and ......using a chromossome number of 5 in parent cell draw steps of cell cycle 1.....thx

2007-01-15 06:59:11 · 1 answers · asked by Anthony V 1 in Zoology

this is my science homework i'm in 2nd you and all answers will be apprecated

2007-01-15 06:59:09 · 22 answers · asked by Anonymous in Biology

how do i draw this..........using a chromosome number of 2 in parent cell draw cell cycle 2....and ......using a chromossome number of 5 in parent cell draw steps of cell cycle 1.....thx

2007-01-15 06:58:56 · 1 answers · asked by Anthony V 1 in Chemistry

2007-01-15 06:58:45 · 3 answers · asked by YOYO 2 in Mathematics

how do i draw this..........using a chromosome number of 2 in parent cell draw cell cycle 2....and ......using a chromossome number of 5 in parent cell draw steps of cell cycle 1.....thx

2007-01-15 06:58:22 · 1 answers · asked by Anthony V 1 in Biology

i need to know if pcb was band from sale or if i can still get it. and where.
i heard that raido shack had it " if so why" and if i can not get it any where does any one know how to synthizace it some one please help.

2007-01-15 06:58:13 · 1 answers · asked by uvphoenix 1 in Chemistry