Science & Mathematics - 21 October 2006

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2006-10-21 11:39:50 · 3 answers · asked by Anonymous in Mathematics

If an African elephant comes to America, is it an African-American elephant?

2006-10-21 11:37:15 · 11 answers · asked by Mr.Why? 2 in Biology

determine the value(s) of k that give the type of solution indicated.

x^2 + kx + 16 = 0 ; 1 real root

im stuck on this question and i need your help please! thank you!

2006-10-21 11:36:18 · 3 answers · asked by Katie P 1 in Mathematics

What is the maximum flow rate of a liquid (hydraulic oil) in a pipe. I have been given to understand that there is limit as to how much oil will pass through a pipe irrespective of the pump pressure, is this true and if so, how do i work it out. Trying to develope hydraulic drive system, according to my calculations the system would need to move just 17cc per engine revolution through the system ( engine revs rising up to 6000rpm)

2006-10-21 11:35:34 · 2 answers · asked by Old Cynic 3 in Physics

Is wax some sort of cellulose compound, or a type of organic plastic? Exactly what IS wax?

2006-10-21 11:23:50 · 4 answers · asked by Bastet's kitten 6 in Other - Science

physics

2006-10-21 11:21:30 · 3 answers · asked by linkinpark_labc 1 in Physics

At a waterpark, sleds with riders are sent along a slippery, horizontal surface by the release of a large, compressed spring. The spring with a force constant k = 4400 N/m and negligible mass rests on the frictionless horizontal surface. One end is in contact with a stationary wall. A sled and rider with total mass 75.0 kg are pushed against the other end, compressing the spring 0.355 m. The sled is then released with zero initial velocity.

What is the sled's speed when the spring returns to its uncompressed length?
and i got 2.72 m/s which is correct

and i still need to solve: What is the sled's speed when the spring is still compressed 0.215 m?

2006-10-21 11:15:16 · 1 answers · asked by Theresa C 2 in Physics

2006-10-21 11:11:24 · 10 answers · asked by The Apostle 2 in Engineering

Suppose X and Y are subsets of R. Define the set X+Y as follows:
X +Y={ z of R I z for some x of X and y of Y}.
Suppose in addition that X and Y are non-empty open set. Prove is Open.

2006-10-21 11:10:26 · 3 answers · asked by Scottie 1 in Mathematics

2006-10-21 11:08:18 · 24 answers · asked by Retarded Dave 5 in Other - Science

Where is the border between the Pacific and Atlantic oceans and does Chile have coastline on both oceans?

2006-10-21 11:06:51 · 14 answers · asked by rhwalpole 1 in Geography

If the first two partial sums in a geometric series are 1 and -1, respectively, what is the third partial sum?

2006-10-21 11:03:47 · 4 answers · asked by Sasha 2 in Mathematics

How is it that "nothing" can escape from the event horizon and yet the gravitational field exists beyond it? (I.e. on our side of the horizon of a singularity). What is the field and why isn't the field carrier limited by the same "curvature"? No information escapes but gravity does....

2006-10-21 11:02:58 · 4 answers · asked by Anonymous in Physics

It has something to do with the earth.

2006-10-21 10:58:07 · 3 answers · asked by Anonymous in Earth Sciences & Geology

i am asking this from a strictly SCIENTIFIC/zoologist/animal behaviorist standpoint....the main drive of animals is to successfully get their genes into the next generation and increase fitness, while decreasing costs. homosexuality would actually increase energy costs, and therefore decrease total fitness. why then do some animals exhibit homosexuality?

2006-10-21 10:55:55 · 7 answers · asked by mighty_power7 7 in Zoology

2006-10-21 10:52:04 · 3 answers · asked by Anonymous in Engineering

2006-10-21 10:51:27 · 2 answers · asked by hamid a 1 in Biology

"A cost to an individual can be justified by a benefit to the group" What factors influence the rights of an individual over that of a group, (the answer has to be medical related) Thank you so much for your help

2006-10-21 10:44:00 · 13 answers · asked by Star dust 4 in Medicine

the answer was given (79.1%) but i need helping getting to that point. thanks!!!!!!!!!!!

2006-10-21 10:43:28 · 2 answers · asked by julia t 1 in Chemistry

2006-10-21 10:42:07 · 2 answers · asked by Anonymous in Zoology

2006-10-21 10:40:59 · 3 answers · asked by korean_muzic 1 in Biology

If the Earths surface was completely level how far below sea level would it be?

2006-10-21 10:36:53 · 7 answers · asked by Anonymous in Earth Sciences & Geology

is one mole avagadro's number?

i chose 3 questions to answer and i only need to asnwer one but im not sure how to do any-which one should i do

1.a mole of moles [the animal] placed from nose to tail would reacch from here to Pluto and back how many times?
2. how many atoms of carbon are there in the hope diamond?
3.a mole of water weighs about 18 grams. how many moles of water are there in the Atlantic Ocean?

can someone pleeeeaaseee help me understand how to answer them??

2006-10-21 10:36:18 · 12 answers · asked by lo 2 in Chemistry

Would the trapeze atrists need their safety net above them?

2006-10-21 10:30:37 · 18 answers · asked by Anonymous in Physics

2006-10-21 10:28:30 · 5 answers · asked by Mr.Why? 2 in Biology

2006-10-21 10:27:53 · 7 answers · asked by BENNETH[[98]] 2 in Mathematics

Planning an attack on a large city... require several Kg of weapons grade uranium... already looked on E-bay - where can I get some from. Money is not a factor...

2006-10-21 10:25:34 · 15 answers · asked by OsamaBinBush 2 in Physics

2(2)=4+2=8+2=10+2=12
3(3)=9+3=12+3=15+3=18
4(4)=16+4=20+4=24+4=28
5(5)=25+5=30+5=35+5=40
12(12)=144+12=156+12=168
17(17)= 289+17=306+17=323
The same kind of sequences can be applied to all of multiplication
But i am confused about division?????
Is just like subtraction like multplication is just addition??
Stupid question but i am just that way:(

2006-10-21 10:24:24 · 6 answers · asked by Moanika 6 in Mathematics

Okay i have to have a science fair topic that deals with biology, it cant involve humans or anything else with a vertebrae. It has to also be semi-professional in topic but able to do in or around my home. Thanks! Serious ideas only please.

2006-10-21 10:20:42 · 5 answers · asked by Anonymous in Biology

2006-10-21 10:17:31 · 3 answers · asked by Anonymous in Biology