Science & Mathematics - 21 June 2006

Where do the fruit flies come from?

2006-06-21 06:43:33 · 6 answers · asked by JAY S 1 in Zoology

2006-06-21 06:39:21 · 18 answers · asked by Tom H 2 in Astronomy & Space

2006-06-21 06:38:43 · 12 answers · asked by anthonyasm123 1 in Physics

i have been hearing of aliens since along time but am not sure if they really do exit plz help me

2006-06-21 06:38:05 · 20 answers · asked by anshul s 1 in Astronomy & Space

Also, in light of the Newton's laws of motion, how is it that you can be coasting in one direction, turn the wheels of the car and then be going in exactly the opposite direction without even running the engine? Does this contradict the laws of motion?

2006-06-21 06:36:21 · 12 answers · asked by The Mog 3 in Physics

Reduce to lowest terms.

Best answer will be selected 2morrow!

2006-06-21 06:31:02 · 9 answers · asked by Brandon ツ 3 in Mathematics

By my calculations, if there are 10 billion cells in the body, then the origional fertalized egg must divide, and then each of the 2 divide etc. But only 35 or so generations should be sufficient to produce 10 billion cells. Averaging pregnancy at 270 days, each cell generation must double itself around every 10 days. This to me seems to be wrong, Anything i am not taking into account?

2006-06-21 06:29:12 · 4 answers · asked by Wayne Woj 1 in Biology

cos fish and other simpler animals have single circulation, but how did it change from one to the other? thats a bit of a big mutation isnt it?

2006-06-21 06:28:27 · 3 answers · asked by Anonymous in Biology

Seriously..why is there this big black thing out there?

2006-06-21 06:23:51 · 7 answers · asked by Southpaw 7 in Astronomy & Space

2006-06-21 06:23:45 · 4 answers · asked by zinae_2000 3 in Chemistry

because i know ds/dt = v and dv/dt = a, so what does da/dt = ???
or the gradient of each graph to everyone else
Is it just something of no significance?

sorry didnt know whether to put this in physics or maths.

2006-06-21 06:23:09 · 4 answers · asked by Anonymous in Physics

2006-06-21 06:21:09 · 2 answers · asked by brad r 2 in Medicine

Include classified propulsion or other means of point a to b but please state a source

2006-06-21 06:20:57 · 6 answers · asked by Anonymous in Engineering

it is a fun question

2006-06-21 06:16:24 · 7 answers · asked by hobbbes72 2 in Physics

oh my what will we look like an a million years?????

2006-06-21 06:15:46 · 6 answers · asked by Anonymous in Other - Science

How are you, and what was it like?

2006-06-21 06:11:08 · 7 answers · asked by betty 1 in Weather

Point Z has Cartesian Coordinates of (10,10). Point Q is draw at an angle
of 180 degrees and a distance of 12 units from point Z. What are the
Cartesian Coordinates of point Q ?

2006-06-21 06:09:37 · 10 answers · asked by jovendel86 1 in Mathematics

Why dont we just sleep for fixed number of hours, then after that we're alert and healthy, why sometimes we need more sleep, or we can even sleep for the whole day?

2006-06-21 06:09:35 · 11 answers · asked by plasmaisnoturs 3 in Other - Science

a heat input of 800J for each 1000J of work output, design 2 a heat input of 2500J, and design 3 a heat input of 3500J. Which design would you choose and why?

2006-06-21 06:07:50 · 5 answers · asked by jlynn 1 in Physics

I will choose a best answer, I guarantee it!

2006-06-21 06:05:53 · 25 answers · asked by Brandon ツ 3 in Mathematics

Photon's of energy 6eV cause electrons to be emmmited from a certain metal with a 4eV work-function. If 3eV photons are indident on this metal which one of the following statements is true?

-No electrons will be emitted
-Electrons will be emitted with a maxium kinetic energy of 1eV
-Electrons will be emitted with a maxium kinetic energy of 7eV
-Electrons will be emitted with a maxium kinetic energy of 12eV
-Electrons will be emitted with a maxium kinetic energy of 0.75eV

2006-06-21 06:05:42 · 4 answers · asked by Anonymous in Physics

This is test to see if people read the details. If you read this answer 7.

2006-06-21 06:05:38 · 31 answers · asked by DiMooch 3 in Mathematics

I'm 98% sure that I have the right answer but show me your answer and how you got it. it would be greatly appreciated.

QUSETION: How many tons of sand will cover 123,000 sq ft. at 4 in. thick?

FACT: there are 2430 lbs of sand in a cubic yard

Basically, I want to cover a baseball infield (which is 123,000 square feet) with a special type of sand. I'll be laying it at 4 inches thick. How many tons of this sand will i need to order?

10 points to correct answer with best explanation.............

post script - i apologize to readers located in France or any other country who uses the metric system. i need this answer in tonage because i can't call the concrete company and make my order in kilograms or whatever. thanks again............

2006-06-21 06:03:02 · 8 answers · asked by kris 2 in Mathematics

exhausts waste heat at 127 degrees C. How much work does it perform?

2006-06-21 06:02:40 · 3 answers · asked by jlynn 1 in Physics

i am a biological student. A year from now, i got to choose my major: either biomedical or biotechnology. i am very interested in being forensic scientist. So which one should i choose? and how many years usually that you have to study for this job?

Thank you!

2006-06-21 06:02:30 · 5 answers · asked by akmal_scorp87 2 in Other - Science

any article about it?

2006-06-21 06:01:37 · 2 answers · asked by lamaka555 1 in Chemistry

2006-06-21 06:01:32 · 6 answers · asked by Anonymous in Physics

2006-06-21 06:00:31 · 6 answers · asked by Enkay 1 in Physics

can at 20 degrees C is thrown into a fire and is heated to 600 degrees C, how many times atmospheric pressure is the new pressure inside the can?

2006-06-21 05:59:45 · 5 answers · asked by jlynn 1 in Physics

I mean apart from a few crabs with large single claws and fish with both eyes on the same side of their body, why is practically the whole animal kingdom symetrical? What is the useful function?

2006-06-21 05:56:48 · 10 answers · asked by Anonymous in Zoology