Science & Mathematics - 4 November 2007

2007-11-04 03:51:41 · 4 answers · asked by Anonymous in Mathematics

some people will be offended at the term mental deficiencies, but it sounds absurd to say "learning difficulties," with regard to wild animals. You know what I mean.

2007-11-04 03:51:15 · 15 answers · asked by Z 1 in Zoology

i dont know how to simplfy any of these:
sqrt(x^2 + 2)
sqrt(x^-2 + 2)
sqrt(1 - sqrt(1 - x))

2007-11-04 03:50:34 · 1 answers · asked by the_hockey_guy1990 1 in Mathematics

1) are viruses made of cells?
2) does heredity occur in viruses?

2007-11-04 03:49:12 · 3 answers · asked by Anonymous in Biology

It's a question of organic chemistry.

2007-11-04 03:47:49 · 5 answers · asked by Kittu 1 in Chemistry

Im Solving a word problem that only has the three sides of the triangle and Im using law of cosines to find the angle of one side, is it possible for me to use law of sines after that? or do I hafta continue using law of cosines?

Ex: Side a=153
Side b= 175
Side c= 201

I just found the measure of angle A through the law of cosines and it is: 47.405 degrees

So can i use law of sines? or do i continue using law of cosines?

2007-11-04 03:45:26 · 7 answers · asked by Anonymous in Mathematics

log (6 is the base) 12

i came up with 1.8573

2007-11-04 03:45:15 · 3 answers · asked by derrim2000 1 in Mathematics

2007-11-04 03:45:03 · 7 answers · asked by xo_preciouspink_xo 1 in Mathematics

Is the sum of interior angles of a non regular polygon 180x(n-2)?
Is the sum of exterior angles of a non regular polygon 360degrees?

thanks

2007-11-04 03:41:14 · 4 answers · asked by Anonymous in Mathematics

Why does helium make our voices go high when we breath it in from balloons.

2007-11-04 03:40:16 · 5 answers · asked by ? 3 in Chemistry

Prove that a group of order 12 must have an element of order 2

2007-11-04 03:38:58 · 1 answers · asked by Lole E 1 in Mathematics

for any p>0, always exists d>0, such that |f(x)-f(1)|>=p whenever |x-1|>=d, this means:
(a) f(x) is continuous at x=1
(b) f(x) is discontinuous at x=1
(c) f(x) is unbounded
(d) lim f(x)=infinite as |x| goes to infinite
which choice is right?

2007-11-04 03:36:27 · 1 answers · asked by Anonymous in Mathematics

Is It Pluto?

2007-11-04 03:35:43 · 8 answers · asked by lianabucci 1 in Astronomy & Space

Why does N(3-) have a larger ionic radius than that of O(2-)??

THANK YOU!

2007-11-04 03:34:18 · 4 answers · asked by Emma B 2 in Chemistry

does anyone no a good site about the solar system??? that says all the planets with a good description that says important facts, and wat it looks like?

2007-11-04 03:27:47 · 9 answers · asked by jumpcrazi95 2 in Astronomy & Space

The velocity function v(t) (in meters per second) is given for a particle moving along a line.
v(t) = t^2-2t-8 1<= t <=5
Find the displacement d1 traveled by the particle during the time interval given above.

And the displacement is -44/3

Find the total distance d2 traveled by the particle during the time interval given above.
Would it not be just be the |-44/3| ?
Or am I a little confused on what they are asking for?

2007-11-04 03:26:59 · 3 answers · asked by Smokey. 6 in Mathematics

2^1.9

I got 3.800 is this right

2007-11-04 03:26:41 · 4 answers · asked by derrim2000 1 in Mathematics

2007-11-04 03:24:24 · 4 answers · asked by Anonymous in Earth Sciences & Geology

2007-11-04 03:24:19 · 2 answers · asked by skycy42 1 in Other - Science

A 13 g coin slides upward on a surface that is inclined at an angle of 12° above the horizontal. The coefficient of kinetic friction between the coin and the surface is 0.23; the coefficient of static friction is 0.31. Find the magnitude and direction of the force of friction under the following circumstances.
(a) after it comes to rest?

Whats the answer and how is it done. I cant figure out what to do.

2007-11-04 03:24:01 · 1 answers · asked by Anonymous in Physics

Please help. How would Idraw a picture of an atom with a photon being released? Describe best you can in words or give me a link please.

2007-11-04 03:23:52 · 2 answers · asked by ? 2 in Chemistry

Why do brown cows eat green grass and only give white milk?

2007-11-04 03:16:26 · 22 answers · asked by Anonymous in Zoology

solve each equation for "x"by using the natural logarithm function. Round your answers to the nearest hundredth. Show work and describe

0.42^(-x)=7

2007-11-04 03:16:00 · 7 answers · asked by hockeyman25158 2 in Mathematics

2007-11-04 03:14:23 · 6 answers · asked by Gabby 2 in Zoology

CH4(g) + 2 O2(g) CO2(g) + 2 H2O(l) H = -891 kJ

Calculate the enthalpy change for each of the following cases.
(a) 3.00 g methane is burned in excess oxygen.

b) 3.00 103 L methane gas at 730. torr and 26°C is burned in excess oxygen

2007-11-04 03:12:20 · 1 answers · asked by summitgirl06 1 in Chemistry

2007-11-04 03:11:49 · 14 answers · asked by UIna 4 in Earth Sciences & Geology

I am doing a science project on how color affects the heat of a material. Can someone give me a good resource to use that will explain: a) how color affects heat and b) how we see color, and what that has to do with the heat of something. Thanks!

2007-11-04 03:11:17 · 1 answers · asked by kristin 2 in Other - Science

what are some fractional equations that are hard and are easy for a freshman highschool student to understand....I just need examples....both sides of the equation have to be a variable.....Just examples Pleaseeeeee!!!!!!
/This is the only one i got so far....

ex: 1/4n= (8/4*(2/2*2/1))n

2007-11-04 03:10:57 · 2 answers · asked by sweet 3 in Mathematics

I have a question that goes like this:

10 points are marked on a straight line, and 11 points are marked on another line parallel to the first one. How many:
a) quadrilaterals
b) triangles
are there with vertices at these points?

2007-11-04 03:09:57 · 1 answers · asked by cincauhangus 2 in Mathematics

what is the physical principle used in chromatography?

2007-11-04 03:08:07 · 1 answers · asked by Anonymous in Chemistry