Science & Mathematics - 28 December 2006

.....of the population in the modern Western world? They want to control people's thoughts, they seek to right laws and swiftly stifle any opposition with labels and accusations-- of not being- politically correct....

2006-12-28 03:29:45 · 31 answers · asked by janesweetjane 2 in Parapsychology

I am a sophomore in college with an unknown major....I have been leaning towards Biology, Zoology or Conservation. I am an average student so I want to pick the one which will suit me best. I am most scared of Organic Chemistry 1 & 2 and the labs. These classes are required for all of the majors I listed. I am a committed student, but how well do you think an average student could do in these classes? Thank you

2006-12-28 03:28:58 · 12 answers · asked by Anonymous in Chemistry

Diagonals AC and BD of quadrilateral ABCD intersect each other at P. Show that:
ar(APB)*ar(CPD) = ar(APD)*ar(BPC)
'ar' stands for 'area of'
Remember, ABCD is only an ordinary quadrilateral. It is not a trapezoid, parallelogram or other special quadrilaterals.

Hint: Draw AE and CF perpendicular to BD

I couldn't figure it out even with the hint.

2006-12-28 03:26:03 · 6 answers · asked by Akilesh - Internet Undertaker 7 in Mathematics

2006-12-28 03:25:00 · 4 answers · asked by ? 5 in Engineering

2006-12-28 03:23:06 · 10 answers · asked by AMM 1 in Mathematics

If a real valued function g is defined by g (kx) =g(x) for all x and g (0) =1
And the real valued function h is defined by h (xy) =h(x) +h(y) for all x, y>0.
Find g(x) and h(x). And hence integrate f (xn+ x-n)*g(x)*h(x)/(1+x2) with respect
to x within the limits 0 and ∞, where f is any real valued function defined in the
limits of integration.

2006-12-28 03:19:02 · 3 answers · asked by rajan m 1 in Mathematics

where m, n
are positive integers, less than 13289.

2006-12-28 03:17:08 · 6 answers · asked by rajan m 1 in Mathematics

2006-12-28 03:15:02 · 8 answers · asked by puk 4 in Zoology

2006-12-28 03:12:25 · 8 answers · asked by l s n 1 in Astronomy & Space

In regards to the idea that the universe consists of more than just the 4 dimensions of space and time. If there is at least an additional dimension of space OR time beyond the main 4, then our traditional ideas of a linear beginning or ending to EITHER of them would have to go right out the window, would it??
Yes or No? and why?

2006-12-28 03:12:23 · 4 answers · asked by bradxschuman 6 in Physics

2006-12-28 03:12:17 · 1 answers · asked by Red Falcon 1 in Engineering

2006-12-28 03:11:40 · 8 answers · asked by Speyman 2 in Zoology

2006-12-28 03:09:49 · 11 answers · asked by raaalphs 2 in Biology

2006-12-28 03:07:40 · 7 answers · asked by ERIC B 1 in Earth Sciences & Geology

Which of the following equations is a single replacement reaction?
C(s)+O2(g)CO2(g)
Fe(s)+H2S(g)-> FeS(s)+H2(g)
8Fe(s)+S8(s)-> 8FeS(s)
Nacl(aq)+AgNO3(aq)-> AgCl(s)+NaNO3(aq)

Which of the following equations is a double replacement reaction?
C(s)+O2(g)->CO2(g)
Fe(s)+H2S(g)-> FeS(s)+H2(g)
8Fe(s)+S8(s)->8FeS(s)
Nacl(aq)+AgNO3(aq)-> AgCl(s)+NaNO3(aq)

Balance the following equation:
NH3+O2->NO2+H2O

5,400 moles of P4010 has a mass of:

52.57 g.
1599982 g.
106965425 g.
1532412 g.

When doing a stoichiometry problem, all of the following could be used to solve the problem except:

conversion equalities.
mole ratios.
temperature.
molar masses.


Calculate the mass of 4.56 moles of helium.

15g helium
18.25g helium
7.68g helium
9.12g helium
4.003g helium


Calculate the number of atoms in 12g of zinc.

1.0 x 1024 atoms
1.1 x 1022 atoms
1.1 x 1023 atoms
0.9 x 1021 atoms
1.2 x 1023 atoms

2006-12-28 03:06:21 · 3 answers · asked by Anonymous in Chemistry

51 degrees north, i've got the heating off and the windows open because it's warm. the sky was cloudless earlier, the sun was warm. i sat out in the garden reading. this shouldn't happen should it?

2006-12-28 03:05:16 · 16 answers · asked by Anonymous in Weather

2006-12-28 03:03:11 · 4 answers · asked by nicholastan_tlk 1 in Engineering

2006-12-28 03:01:34 · 8 answers · asked by Yiddy 2 in Zoology

a. Tissue swells because of outflow from capillary beds.

b. Blocking antibodies inactivate the resident mast cells.

c. White blood cells are attracted to the area by chemotaxis.

d. Complement proteins help identify invading material.

e. The foreign invaders are engulfed and destroyed by phagocytosis.

2006-12-28 03:00:47 · 3 answers · asked by jay 1 in Biology

a. ocelli.


b. lenses.

c. rhabdomeres.


d. ommatidia.


e. pupils.

2006-12-28 03:00:08 · 2 answers · asked by jay 1 in Biology

2006-12-28 02:59:48 · 11 answers · asked by Fuck The System 1 in Astronomy & Space

We have a extra credit project at my school for chemistry. We have to freeze a Steel pipe and shatter it. What is the best chemical to use?

2006-12-28 02:58:55 · 4 answers · asked by ask me 1 in Chemistry

2006-12-28 02:58:34 · 7 answers · asked by robby 1 in Biology

2006-12-28 02:53:31 · 7 answers · asked by Rebelicious 2 in Biology

Hello guys

err i know i have to do my homework on my own but really believe me i have done trying this thing heap of times but i cant find do with it
pls help me ,,,,, i have find answer of

lim x-> 1

[(x) + (x)^2 + (x)^3 + ......... + (x)^n - n ] / (x - 1 )


i know the answer is n*(n+1) / 2 but how do you get it ???
can some one help me with evrything step by step ????


thanx a lottt in advance

2006-12-28 02:51:28 · 5 answers · asked by wp1_wp1 1 in Mathematics

I'm going to need help with moles,blance equations & I need someone to help me so I was wondering if someone will be greatful to help me. If you will help me let me know and I'll post the problems up.

2006-12-28 02:47:41 · 2 answers · asked by Anonymous in Chemistry

Consider this scenario-
Vehicles approaching a crossroads from a particular direction encounter traffic lights that r either red or green.Each vehicle then either goes left,right or straight on.The timing cycle 4 the lights is 1min on red alternating with 45secs on green.A person watching vehicles approaches the junction 4 a few mins&counts 6 that turn left,3 that turn right and 11 that go straight on.

a) use this timing information for the lights to calculate the theoratical probabilities of finding them at red or green
b)use the vehicle count data to calculate estimated probabilities 4a vehicle going left, right or straight on at the junction
c)4 the next vehicle approaching the junction draw a tree diagram showing all the possible combined outcomes with their respective probabilities, use ur diagram2answer d to f

What is the probability that the next vehicle will-
d, find the light on green&go straight on
e,not go straight on
f,find the lights on red & not turn right ???

2006-12-28 02:47:29 · 6 answers · asked by serenbach 2 in Mathematics

pls,i need three easy to do topics on control systems and design for my seminar presentation as well as project.thanks.

2006-12-28 02:46:55 · 3 answers · asked by Ekot-uyo 1 in Engineering

6. a triangle with an area of 16 has a base of (x+1) and a height of (x-13) fine the value of x along with the base and the height of the triangle.



1. between what two consecutive intergers is the value of log 66
2



7. express (6-3i)^2 in a+bi form.


2. which equation represents a circle with a center of (2,-3) and a radius of 6

2006-12-28 02:43:00 · 5 answers · asked by dojorno5 2 in Mathematics

a. femur.

b. humerus.

c. radius.

d. tibia.

e. ulna.

2006-12-28 02:41:40 · 12 answers · asked by Jason D 1 in Biology