Science & Mathematics - 1 October 2007

2007-10-01 16:11:27 · 7 answers · asked by Anonymous in Zoology

it feels like its burning when I am injecting it...

2007-10-01 16:10:34 · 4 answers · asked by junebug 1 in Medicine

Water weighs 62.4lb/ft. How much does the water weigh in a full 5ft by 3ft by 2ft rectangular fish tank?

2007-10-01 16:08:55 · 5 answers · asked by Anonymous in Mathematics

Solve for d


16d - (4 - 5d) = -67

2007-10-01 16:08:26 · 17 answers · asked by x10 2 in Mathematics

2007-10-01 15:54:52 · 2 answers · asked by Anonymous in Geography

I am looking for the name of the object that floats below the water surface but does not sink

2007-10-01 15:54:14 · 1 answers · asked by chewy_95 2 in Physics

I read in my text book that ions are found in enormous collections of ions and they have no single bonding partner.

Why though? I mean, take NaCl for example, isn't Na's partner Cl? And why are other ions attracted to this pair? Don't these two complete each other? Why can't this pair be called a molecule? What connection to they have with other atoms, or even other Na's and Cl's? Weren't all the electrons already transfered? So what do these other ions want?

To tell you the truth, I don't really know much about chemistry. So help me out! :) What does it REALLY mean when an atom is charged? I mean, what can it do in this state?

2007-10-01 15:53:41 · 4 answers · asked by Anonymous in Biology

2007-10-01 15:53:27 · 1 answers · asked by Anonymous in Physics

Ever since I was younger I have had premonitions. I guess some people call it ESP. Its not always something visual sometimes its a sound or a feeling. Like the feeling that something bad can happen. I am wondering if there are some ways that I can enhance my premonitions or make them stronger so I can understand more from them. If I can (which I know I can) then what can I do?

2007-10-01 15:49:43 · 14 answers · asked by Anonymous in Parapsychology

blood type that adopts quickest, mutates with the virus quickest, etc.

2007-10-01 15:49:38 · 4 answers · asked by Anonymous in Biology

a) 2x^3 + 7x^2 + 2x - 3

b) 10x^3 + 33x^2 + 23x - 6


show steps please :) thanks

2007-10-01 15:46:22 · 3 answers · asked by mystery_girl07 2 in Mathematics

Specifically when you mix it with water and red cabbage juice (cyanidin?).

2007-10-01 15:43:36 · 1 answers · asked by The Phat Whale 3 in Chemistry

For a line segment AB, one endpoint is A(0,6) and the midpoint is M(4,7) find the coordinates of endpoint B.

2007-10-01 15:38:08 · 5 answers · asked by Koool dude 1 in Mathematics

2007-10-01 15:36:09 · 8 answers · asked by massood v 1 in Astronomy & Space

2007-10-01 15:31:13 · 3 answers · asked by kwikee m 1 in Chemistry

My dad was wondering and he said it will bug him all night so HELP!!!!!!!!!!!!

2007-10-01 15:28:24 · 7 answers · asked by Anonymous in Mathematics

I am lost completely

umm I hears something about the columns - Rank= 0 then it's independent else its dependent


idk how to solve or what am I supposed to do exactly??

what is it?

confused here

2007-10-01 15:19:00 · 2 answers · asked by Anonymous in Mathematics

For which one of the following situations will the pat length equal the magnitude of the displacement?
a)a jogger is running around a circular pth.
b) A ball is rolling down an inclined plane.
c) A train travels 5 miles east; and then, it stops and travels 2 miles west.
d) A ball rises and falls after being thrown straight up from the earth's surface.
e) a ball on the end of a string is moving in a vertical circle.

I'd rather you explain then give the answer....well if you'd be so kind...........thanks!!

2007-10-01 15:18:38 · 1 answers · asked by Anonymous in Physics

Im in gr 11. Im taking physics 11 for university, as well as bio, chem and math 11 for university. My question is, is it necessary to take physics because im really hopeless at it. Im currently getting 75% in it but in chemistry and biology i have 87% and 89% respectively.

In first year (and throughout the rest of uni) do i have to take physics?

thanks

2007-10-01 15:16:14 · 5 answers · asked by Anonymous in Medicine

What is the minimum number of vectors with UNEQUAL magnitudes whose vector sum can be zero?

help please!

a)two
b)three
c)four
d)five
e)six

2007-10-01 15:15:38 · 6 answers · asked by Anonymous in Physics

10-6(9-4)to the 2nd power
4(5)the the 2nd power
4(25)
100

2007-10-01 15:15:13 · 8 answers · asked by Lester D 1 in Mathematics

2007-10-01 14:53:42 · 6 answers · asked by Anonymous in Mathematics

help

2007-10-01 14:50:12 · 7 answers · asked by Johnny D 1 in Mathematics

Balance the following equations, using the oxidation number method, and enter the coefficients in the boxes. The coefficients must be the smallest possible integers.
All boxes must contain an entry.
NO3- + Al + H2O + OH- NH3 + Al(OH)4- + H2O + OH-

Note that neither H2O nor OH- should appear on more than one side of the equation. Thus, some of the coefficients above must be 0.

Tries 0/5
PH3 + CrO42- + H2O + OH- P + Cr(OH)4- + OH- + H2O

Note that neither H2O nor OH- should appear on more than one side of the equation. Thus, some of the coefficients above must be 0




I kept trying to do this until I just couldn't. I can't get it please help me in anyway.

2007-10-01 14:50:12 · 1 answers · asked by Student 1 in Chemistry

John Glenn (Mercury astronaut) returned to space in 1998. Do you think any of the Apollo astronauts will do a similar thing?

2007-10-01 14:49:31 · 4 answers · asked by timespiral 4 in Astronomy & Space

2007-10-01 14:49:19 · 3 answers · asked by thegre8t 1 in Mathematics

i gota 45 Hz waveform and 10V voltage and im trying to find the change in phase between the current and voltage across capacitor..... Whats the formula for this????? I know its simple but I cant find it in my notes....... Is it simply 90 deg?

2007-10-01 14:48:25 · 1 answers · asked by james m 3 in Physics

What would be the effects of an explosion completely tearing away Hoover Dam? How large of an area would be flooded? How many would lose power due to power supply being cut of from this source? What would be all the effects including possible casualties if this ever happened?

2007-10-01 14:46:46 · 4 answers · asked by Anonymous in Earth Sciences & Geology

It seems the moon landing is at least a decade away. Will any of the former Apollo astronauts that walked on the moon still be alive?

2007-10-01 14:45:16 · 4 answers · asked by timespiral 4 in Astronomy & Space

Composition of a Mixture by Acid-Base Titration

A 1.00-g solid sample containing a mixture of table salt (NaCl) and citric acid (H3C6H5O7, a triprotic acid) is dissolved in 15 mL of water.
Titration of the acid solution requires 14.90 mL of 0.3196 M NaOH solution to reach the endpoint.
Calculate the mass percent H3C6H5O7 in the solid mixture.



I don't care when you answer... even till next week... but please just help.. I don't get it =(

2007-10-01 14:42:50 · 2 answers · asked by Student 1 in Chemistry