Science & Mathematics - 6 February 2007

Prove: If triangle ABD is congruent to triangle DEA, then angle CBD is congruent to angle FEA

and

Given: Triangle ABD is congruent to Triangle DEA; Triangle ACD is congruent to Triangle DFA

Prove: Triangle AFE is congruent to Triangle DCB.

Any help is appreciated.....

2007-02-06 14:36:44 · 4 answers · asked by hot4manny 2 in Mathematics

well main is blue pink and purple

2007-02-06 14:36:28 · 2 answers · asked by jessica_elenita 2 in Earth Sciences & Geology

when winter first hit it felt so cold that I made leg warmers and my daughter used a space heater to keep her hands warm at the computer, but now that it's much colder outside for longer periods, it doesn't feel as cold in here, why?

2007-02-06 14:36:21 · 4 answers · asked by Mystee_Rain 5 in Weather

Homework help plz!

2007-02-06 14:35:46 · 3 answers · asked by Anonymous in Mathematics

My friend does not know which of these three majors to choose....which, in your opinion, is better for him. He wants to be a pharmacist. Also, what exactly is each major all about?

Also, my friend needs to get an account....I'm like his secretary today. LOL.

2007-02-06 14:35:31 · 11 answers · asked by Anonymous in Medicine

please try this proceed your answer, real quick.

2007-02-06 14:34:34 · 8 answers · asked by ram_mar63 1 in Other - Science

can you please explain it to me, or tell me about a good site i could visit, that would explain it for me.

2007-02-06 14:31:19 · 2 answers · asked by masry 2 in Chemistry

2007-02-06 14:29:05 · 4 answers · asked by Anonymous in Chemistry

2007-02-06 14:28:26 · 5 answers · asked by ROBIN G 1 in Botany

the symbol is Ni

2007-02-06 14:28:09 · 4 answers · asked by Anonymous in Chemistry

2007-02-06 14:27:39 · 6 answers · asked by baby kay 4 u 1 in Zoology

2007-02-06 14:26:55 · 3 answers · asked by kmann882002 2 in Chemistry

With respect to N2 O3
It asks what the mass of 1 mol, 5 mol, and 0.5 mol is.
How would you find the mass though...I don't get it

Also, it asks to calculate the % composition of nitrogen in the compound...I'm not sure of how to find that either

Any sort of help would be great. Thanks =)

2007-02-06 14:26:00 · 1 answers · asked by A 2 in Chemistry

2007-02-06 14:25:35 · 9 answers · asked by Anonymous in Mathematics

1/2mr0^2 + 1/2mri^2 = Inertia of the ring. Why is it plus and not negative? the intergral should be subtraction. no?

Thanks

2007-02-06 14:25:06 · 1 answers · asked by Anonymous in Physics

if a regular hexagon is inscribed in a circle with a radius of 25". find the length of each side of the hexagon.
steps and work please

2007-02-06 14:24:39 · 4 answers · asked by k 1 in Mathematics

Quantum information states the electron does not orbit the nucleus but instead vibrates in some wave propagation, yet definitions of the number of electron orbits per second exist.. While certainly vibration and wave propagtion are factors, the cyclic motion of rotation and orbit must begin at atomic levels but where and is there a base value of reference? There are various measurements defined which should allow some calculation of this but the definitions when cross-compared are conflicting.

Electron orbits per second = about 6.5 trillion times per second
Speed of an electron in hydrogen = 220,000,000 cm per second
Hydrogen Radius = 5,292,000,000th of a centimeter.
Light travels radius of hydrogen atom = 10 to -18th power/second.
Light travels 1 foot (30.48 cm) = 1,000,000,000th of a second (ns)

By these definitions the electron orbit should be more per second than defined and the speed of light appears not constant in moving from the hydrogen atom outward to 1 foot.

2007-02-06 14:24:34 · 1 answers · asked by alchemaniacal 1 in Physics

What is the product of the terms which must be removed from the sum

(½) + (¼) + (1/6) + (1/8) + (1/10) + (1/12)

if the sum of the remaining terms is to equal 1?

2007-02-06 14:23:14 · 2 answers · asked by Anonymous in Mathematics

show the steps please

2007-02-06 14:23:05 · 3 answers · asked by k 1 in Mathematics

what is the solar wind and how does it interact with the Earth's surface?

2007-02-06 14:22:34 · 4 answers · asked by Mint Car 1 in Earth Sciences & Geology

How much snow does it usually take for your school, job, or college to close?

2007-02-06 14:21:49 · 10 answers · asked by Donovan G 5 in Weather

0.2k+0.2k-0.05=5.09

2007-02-06 14:20:08 · 11 answers · asked by Cha 3 in Mathematics

a. x= -1
b. x=3
c. x= -3, x=1
d. y=2

2007-02-06 14:19:39 · 4 answers · asked by lana l 1 in Mathematics

If photons are the means of transferrence of forces between particles and photons can knock out an electron (photoelectric effect) than how is it an attractive force rather than a repulsive force in atoms?

2007-02-06 14:18:49 · 3 answers · asked by Twizard113 5 in Physics

it is for my daughters work

2007-02-06 14:17:39 · 10 answers · asked by pink_park_puppies 1 in Mathematics

f(x)={-1/2x if x< 3
{2-8x if x is greater or equal to

2007-02-06 14:16:02 · 2 answers · asked by whitmo2004 1 in Chemistry

What does a chemical engineer do???

2007-02-06 14:14:39 · 4 answers · asked by B9O9R9I9C9U9A 3 in Engineering

2007-02-06 14:14:20 · 2 answers · asked by aamna 2 in Mathematics

...came up to you and suggested the moon landings were faked, what would you do?

After all the training, the time you missed with your family, the immense risk of leaving the earth, and knowing that you only had one shot at getting onto the moon or off the moon, how would you feel if one of these little idiots, who know nothing about space, the Apollo program, except what they hear from equally ignorant friends or from ludicrous conspiracy sites - tried to tell someone like you that you faked it.

I can't imagine what I would do...

2007-02-06 14:13:50 · 13 answers · asked by nick s 6 in Astronomy & Space

2007-02-06 14:13:19 · 3 answers · asked by Anonymous in Mathematics