Science & Mathematics - 5 November 2007

Im in a confusion. Imagine if two objects were squashed when dropped and both returned to their original states.
However, one of them deformed less in comparison to the other before it returned to its original state.
Does this mean that the object that deformed less is more elastic, does this also mean that it will lose less energy to the surroundings?

2007-11-05 09:53:25 · 5 answers · asked by saman-a-man 1 in Engineering

81s^2-16=0

I keep getting all decimals...???

2007-11-05 09:52:15 · 3 answers · asked by higherlovetx 5 in Mathematics

Please no plagarism. Your own thoughts on it would be nice.

2007-11-05 09:51:21 · 2 answers · asked by Qwerty 2 in Biology

explain with excellent proof...ty ^-^ and plz suggest how to draw the bohr diagram transferring electrons ty

2007-11-05 09:49:26 · 1 answers · asked by Anonymous in Chemistry

How would I do this?

Solve each system of equations by using substitution.

1) m+n=20
m-n= -4

Solve each system of equations by using elimination.

1) 2p-q=5
3p+q=5

2007-11-05 09:49:03 · 4 answers · asked by John.X 2 in Mathematics

How does evolution explain the DNA difference between man and the closet speces to man?

I seem to understand that trial and error by nature cannot effect the splicing of genes from species to species, but man can do it by genetic engineering.

2007-11-05 09:48:13 · 3 answers · asked by pachomius2000 2 in Biology

And assuming no friction, what is the acceleration?

2007-11-05 09:46:46 · 2 answers · asked by Anonymous in Physics

the word smog comes from smoke and fog

2007-11-05 09:38:27 · 4 answers · asked by amikata r 1 in Weather

A radioactive substance decays at a rate proportional to the amount present. If 20 percent of such a substance decays in 19 years, what is the half-life of the substance?

2007-11-05 09:38:25 · 1 answers · asked by JP 1 in Mathematics

Where are trenches and ridges located on the Cocos plate?

2007-11-05 09:35:38 · 2 answers · asked by Liz P. 2 in Earth Sciences & Geology

2007-11-05 09:35:36 · 1 answers · asked by Thomas K 1 in Physics

during which stage of meiosis is the diploid number of chromosomes reduced to the haploid number of chromosomes?
& also...explain the role of crossing-over in ensuring genetic variation!

2007-11-05 09:35:04 · 1 answers · asked by Anonymous in Biology

give me a link please

2007-11-05 09:32:26 · 9 answers · asked by black 2 in Engineering

Where are earthquakes on the Cocos plate loacted?

2007-11-05 09:32:22 · 1 answers · asked by Liz P. 2 in Earth Sciences & Geology

An empty rubber balloon has a mass of 0.0120 kg. The balloon is filled with helium at a density of 0.181 kg/m3. At this density the balloon is spherical with a radius of 0.300 m. If the filled balloon is fastened to a vertical line, what is the tension in the line?

2007-11-05 09:30:02 · 1 answers · asked by Anonymous in Physics

Simply, does this Law work and has it worked for anyone or not...what results or lack of results have you seen?

Thanks

2007-11-05 09:26:51 · 17 answers · asked by Anonymous in Other - Alternative

go to http://mathgod.com/mathcomps/interschools/fall2007/fall2007interschool-test.pdf and see if you can figure these out?!!!
I need to do them for Mu Alpha Theta, and its not cheating cuz it says I can use any resource (see for yourself) that includes internet and other ppl!. I'm a freshman and let me tell ya, if I try these I will be going in way over my head. Computer programs help, especially for the last questions that aren't really questions, don't ask me which ones! I have no idea...I got a few answers though.

2007-11-05 09:26:49 · 7 answers · asked by ? 2 in Mathematics

1)WHICH REACTANT IS LIMITING..SALICYLIC ACID OR ACETIC ANHYDRIDE?

2)WHAT IS THE THEORETICAL YIELD OF ASPIRIN?

3)IF I OBTAINED 1.789G OF ASPIRIN, WHAT IS THE PERCENT YIELD? REALLY CONFUSED

2007-11-05 09:21:10 · 1 answers · asked by frenchies 2 in Chemistry

For some reason I keep getting stuck once I find the derivative. I have that f'(x)= 6-9x^(-2) but I can't find the local max and mins, no matter what I try .... thanks for your help!!!

2007-11-05 09:17:03 · 2 answers · asked by Jackie S 1 in Mathematics

if your percentage yield varies from 100% explain what might have effected your yield?

If you percentage equals to 100% explain why this may or may not be a correct value?

THE ASPRIN I WEIGHTED IS 1 GRAM AND IT ASKED THE THEORETICAL YIELD OF ASPIRIN AND PERCENTAGE YIELD OF ASPIRIN

2007-11-05 09:16:54 · 1 answers · asked by frenchies 2 in Chemistry

2007-11-05 09:16:28 · 2 answers · asked by Ashley V 2 in Chemistry

2007-11-05 09:15:43 · 4 answers · asked by Ashley V 2 in Chemistry

my blood pressure always 135-140/ 60-68 . i want to make it low i tryd alot i walk and run for 2 hours everyday i eat fruit and vegtable but nothing change i am only 26 and i made check up blood and urine its all normal , now am eating garlic and drink fresh lime mix with water , i heard about coconut is good for blood pressure so can anyone tell me about it ? also i am not in medicine i am 5'8 190 pound i was 250 before but nothing change in my blood pressure ,doctor didnt put me in any medicine and i have a pointment next month !

2007-11-05 09:15:22 · 2 answers · asked by bmw2006 1 in Medicine

2007-11-05 09:12:33 · 2 answers · asked by erin k 1 in Physics

know any good jobs i can take that helps animals

i'll list one
veterinarian

does anybody else know???????????

i heard that animal police kills animals.. :(
well what i saw on animal planet they helped the animals.. but i've been told that's not entrirely true.. i heard they put them to sleepp

i want to know jobs/carrers/..etc that doesn't put animals to sleep that at least 90% helps the animals....

2007-11-05 09:10:54 · 5 answers · asked by Justin Kalkimer 3 in Zoology

2007-11-05 09:10:52 · 4 answers · asked by songbird 1 in Biology

A) muscle
B) muscle cell
C) myofibril
D) sarcomere
E) all of these

2007-11-05 09:08:25 · 0 answers · asked by Anonymous in Biology

Prove this identities:
1.sin(a+30)-sin(a-30)=cos a
2.cos(45+a)+cos(135+a)=-sqrt2*sin a

2007-11-05 09:07:08 · 2 answers · asked by Amir B 1 in Mathematics

C?c?a?a?e?

2007-11-05 09:07:03 · 2 answers · asked by Anonymous in Chemistry

. The traffic light is timed for 15 seconds. If the car’s driver wishes to pass the light without stopping just as turns green again, what will be the speed of the car just it passes the light?

2007-11-05 09:06:49 · 1 answers · asked by navya 1 in Physics