Science & Mathematics - 26 September 2007

What type of forces are there between molecules of chloroethene? are there van der waals?
Also, what are two uses of PVC? thanks again.

2007-09-26 09:28:36 · 3 answers · asked by Anonymous in Chemistry

http://www.rogerscentre.com/home.jsp

How many do you think could fit in there?

2007-09-26 09:25:01 · 2 answers · asked by Bill W 【ツ】 6 in Zoology

I have tried to solve this equations here is what I did could you please let me know if I have done this correct or where I am going wrong, thanks for any help you can give
2x=3 - 8(x+2) solving gives
2x=3 - 8x - 16 multiplying out brackets,
10x=3 - 16
10x= - 13
x= - 1.3

2007-09-26 09:23:06 · 17 answers · asked by Anonymous in Mathematics

!. a farmer found that his cow and goat would eat all the grass of a field in 45 days, his cow and goose in 60 days and goat and goose 90 days. If the cow goat and goose are turned on the field together how long will it take for them to eat it ll?

Two cyclists were going to race. it takes mary 6 minutes to ride around the track 1ce it takea mike 4 mins. how many minutes will pass between each of the times mike passes mary?

Bill rasheem and juan own a body shop juan owns 5/8 body shop and rasheem owns 2ce as much as bill, what fraction of the shop does bill own?

2007-09-26 09:21:53 · 4 answers · asked by Anonymous in Mathematics

2007-09-26 09:20:44 · 4 answers · asked by Yahoo! King 1 in Mathematics

skin
glucose
veggie oil
hair
RNA
sucrose
butter
fingernails
H(2)SO(4)
HNO(3)
gelatin
molasses
vinegar

2007-09-26 09:20:29 · 2 answers · asked by Marissa 2 in Chemistry

2007-09-26 09:20:19 · 4 answers · asked by :] 3 in Earth Sciences & Geology

From two tracking stations A and B, 350 km apart, a ufo is is
sighted at C above AB, making angle CAB=32degrees
and angle CBA=54 degrees. Find the height of the UFO.

what is the easiest way this can be solved

2007-09-26 09:18:13 · 3 answers · asked by Anonymous in Mathematics

Hi can someone please tell me how to draw a dot and cross diagram for this? i cant seem to figure it out. thanks.

2007-09-26 09:16:10 · 2 answers · asked by Anonymous in Chemistry

If f(x)=5x^2-11x-1, find f'(x)____

Find f'(5)_____

2007-09-26 09:13:41 · 7 answers · asked by Joe B 2 in Mathematics

2007-09-26 09:13:33 · 3 answers · asked by mickymo1 3 in Earth Sciences & Geology

ok there is this light postively charged object and its close to this wire(electrons) which is part of a circuit.will this light object get attracted to the wire .oh and the wire has no insulatorcovering it.

2007-09-26 09:13:23 · 3 answers · asked by Anonymous in Engineering

2007-09-26 09:12:29 · 9 answers · asked by James H 1 in Mathematics

I know it is common for them to utilize AutoCAD programs and they do duct design but if someone could break down exactly what they do, I would appreciate it.

2007-09-26 09:12:26 · 5 answers · asked by MyBAD 1 in Engineering

pease help plese help me find the value of x

2007-09-26 09:10:23 · 2 answers · asked by Anonymous in Mathematics

imagine a circuit which only has a switch and wire and cell and no bulb.

2007-09-26 09:08:45 · 11 answers · asked by Anonymous in Engineering

I need help on solving these Calculus Derivative...

1. Sin2xCosx

2. (2x-5)/(x^(2)-4)

3. (1)/(x^(2))

4. Sin[ (pi.) / (x^(2) - 5)]

5. 4 sq rt. (x sq rt. (x))

6. f(x) = x^(4)e^(x)

Please show the steps so I can understand how you solve it. Thanks in advance...

2007-09-26 09:07:55 · 2 answers · asked by Anonymous in Mathematics

2007-09-26 09:05:31 · 3 answers · asked by Miss. Worried 1 in Chemistry

HCl
DNA
Starch
KOH
Sodium Chloride

2007-09-26 09:03:21 · 4 answers · asked by Marissa 2 in Chemistry

What happened to the 'CYDONIAN CITY'? Do Earthlings want to pursue the treasures of long lost Martians underground and How and when was the hill formed as a Human face and Pyramids identical to Earth's?

2007-09-26 09:03:19 · 2 answers · asked by do_r_do_5 1 in Astronomy & Space

2007-09-26 09:02:47 · 1 answers · asked by Miss. Worried 1 in Engineering

The slope of the line tangent to the curve y^2 + (xy + 1)^3 = 0 at (2 , -1) is ...

a. -3/2
b. -3/4
c. 0
d. 3/4
e. 3/2

2007-09-26 09:01:45 · 1 answers · asked by Anonymous in Mathematics

i cant figure out this problem..

The members of a club decided to wash cars in order to earn money for the club. Each member of the club washed 3 cars and charged 2$ per car. When they had finished, their receipts totaled &66, which included 6$ in tops. How many members were in the club?

2007-09-26 09:01:25 · 7 answers · asked by Lindsey 2 in Mathematics

2007-09-26 09:00:07 · 18 answers · asked by lula4ever04 1 in Mathematics

2007-09-26 08:59:20 · 6 answers · asked by Geo 1 in Weather

1)what is the least common denominator of 1/2, 2/7x, and 5/x?
(1)9x
(2)2x
(3)14x
(4)14x^2?

2)what is the sum of 2/x and x/2?

2007-09-26 08:59:06 · 1 answers · asked by timothy_yeav 5 in Mathematics

a. soppose tha jet traavels 60 kilometers in 5 minutes. how many kilometers will it travel in 2 hours? In 6 hours?

b. how many more kilometers will the jet travel in 6 hours than in 2 hours?

c. soppuse that nodin flew on this jet to the dominician republic. If his trip took 4 hours, how many kilometers did he travel?


these are the probles i need help wid they are 3 dif. problems so plz help

2007-09-26 08:57:33 · 3 answers · asked by Anonymous in Mathematics

hi, please can someone help - what is the bond angle in OF2?? thanks!

2007-09-26 08:55:11 · 3 answers · asked by Anonymous in Chemistry

The worksheet is combining like terms. The problem is.

-2(c-d)+(c-d)-6(c-d)

Thank you so much for your help. I am so confused!

2007-09-26 08:54:13 · 10 answers · asked by wwefan1324 5 in Mathematics

Ok this is the problem x^2-10X+18=0 .

As an answer i got 10(+)(-)2sqrt7 /2 = 5(+)(-)2sqrt7.

Is my answer correct. If not can someone help. THanks

2007-09-26 08:53:47 · 3 answers · asked by Anonymous in Mathematics