Science & Mathematics - 21 October 2006

2006-10-21 09:19:54 · 10 answers · asked by S-J S 1 in Biology

2006-10-21 09:18:52 · 4 answers · asked by jonnis51 2 in Chemistry

classical mechanics

2006-10-21 09:17:16 · 9 answers · asked by Anonymous in Physics

2006-10-21 09:13:36 · 3 answers · asked by Carly W 1 in Chemistry

2006-10-21 09:13:23 · 14 answers · asked by Celebrity girl 7 in Astronomy & Space

2006-10-21 09:12:00 · 4 answers · asked by Travis 2 in Zoology

the sum of the squares of three consecutive odd integers is 875. Find the integers.

my teacher didnt show us how to do this so please someone help me. thanks!

2006-10-21 09:09:57 · 9 answers · asked by Katie P 1 in Mathematics

"How much heat is needed to raise the temperature of 150.0 mL pure water from 20.0 degrees c to 100.0 degrees c?"

I know how to do the problem with mass, but how do I solve it with volume?

2006-10-21 09:09:05 · 2 answers · asked by mbtafan 3 in Chemistry

2006-10-21 09:08:26 · 7 answers · asked by kliq 1 in Physics

2006-10-21 09:04:20 · 4 answers · asked by bognar4 1 in Other - Science

And is there such a thing as the selfish gene, are people really born selfish, or do they learn to become selfish, and if there is a selfish gene then is there also an unselfish gene (altruism)...so what do people out there believe are we born with a selfish gene?.......

2006-10-21 09:03:52 · 12 answers · asked by Anonymous in Biology

Alright.

3^(5X) * 9^(X^2) = 27

What steps do I take to solve?

2006-10-21 08:59:38 · 5 answers · asked by collegedebt 3 in Mathematics

2006-10-21 08:58:07 · 6 answers · asked by Kristy 1 in Geography

2006-10-21 08:56:58 · 22 answers · asked by Anonymous in Other - Science

2006-10-21 08:50:44 · 12 answers · asked by Anonymous in Other - Science

Since the likelyhood of man developing on another planet multiplied by the chances of us being able to recogniose him as a being multiplied by the chances of us being in existence multiplied by the chances of us both existing in the same time slot .....its all a bit ridiculous isn't it?

2006-10-21 08:49:34 · 5 answers · asked by Anonymous in Earth Sciences & Geology

2006-10-21 08:47:47 · 8 answers · asked by blah 1 in Mathematics

2006-10-21 08:46:29 · 6 answers · asked by Anonymous in Chemistry

this is a behavourial instinct but this information must have been passed down in the dna..instinct i think is a catchall for various automatic response..as soon as a baby deer can walk it will hide with it's ears down and wait (hours sometimes) until it's mum gives the all clear..this has to be more than flight or fight response caused by hormones..if this can be classed as inherited memory transferred via dna..is this feasable?????

2006-10-21 08:44:19 · 3 answers · asked by mark b 2 in Other - Science

If you don't know, then try it to see.

2006-10-21 08:43:27 · 17 answers · asked by Mike 2 in Chemistry

I want to chart how the barometric pressure has changed over the past few days.

2006-10-21 08:42:34 · 9 answers · asked by Char 2 in Weather

All I know is that no steel frame building has ever collapsed from fire except for that day. Most people don't even know that 3 trade centers fell that day (1,2, and 7). No plane hit building 7 and it somehow collapsed when there were only fires on 3 floors of the building.

2006-10-21 08:36:26 · 6 answers · asked by Peter F 1 in Physics

2006-10-21 08:30:35 · 11 answers · asked by Sarah . 1 in Biology

2006-10-21 08:29:09 · 25 answers · asked by Anonymous in Astronomy & Space

Let V be an inner product space. Let vectors u,v in V be such that u,v are orthogonal to each other. My question is that are we guaranteed that u,v will also be orthogonal under any other inner product defined?

In any vector space, it is possible to have more than one inner products defined. So if two vectors are orthogonal under one inner product, will they also be orthogonal under another inner product?

2006-10-21 08:28:48 · 4 answers · asked by The Prince 6 in Mathematics

where is the best place to buy eyepieces, (please not ebay)

locally they cost me 120 bucks a piece?

any ideas?

2006-10-21 08:25:30 · 7 answers · asked by Anonymous in Astronomy & Space

A series of horrible events should take place after this pea size object gets near earth, or when it fall on earth. Yet I wonder what really happens in this case?

How many small black holes could be found in a diameter of 1-2 light years around us?

2006-10-21 08:24:06 · 10 answers · asked by behrooz_hariri 1 in Astronomy & Space

2006-10-21 08:16:58 · 10 answers · asked by foroogh h 1 in Weather

I have a very simple PMA concept. I take a flat plate (plastic), drill a hole through the center and hot glue 4 magnents onto the plate. Each magnent is alternating in current (meaning if you for every positive the two closest magnents are negative). Each magnent is about 2 inches long with a 1 inch gap. I place the plate on a fan axle, screw it in place, and turn said fan on. Now I take a copper wire (just your average copper wire that I stripped from an old fan) and coiled it about 70 times +/- 1 turn (also tried different windings) with a seperation of 1.25 inches meaning that while the magnent passes one end of the coil on a positive the other end of the coil will be meeting a negative. I then take the inner and outer leads and place them on a voltmeter. I then place the stationary winding at distances ranging from 1 mm to 4 inches away from the magnents as they turn. I am unable to produce any voltage (yes I have tested the volt meter). I have altered the speed also. Whats wrong?

2006-10-21 08:16:06 · 2 answers · asked by Anmont 2 in Physics

Marguerite daisy flowering time is important inside greenhouse to adjust flowering time for profitable marketing. Light level and daylenght can stimulate flowering time. To do this, shading or artificial light regims is applied in greenhouse, to postpone or advance flowering. Which daylenght/lightlevel is necessary to manipulate flowering time for Marguerite?

2006-10-21 08:13:49 · 2 answers · asked by behrooz_hariri 1 in Botany