Science & Mathematics - 9 October 2006

Really stupid science question. I understand the very basics of lasers and read about someone doing the same principle with sound waves and made a device that emits sound, but you can only hear it when it is pointing straight at you. I thought this was interesting and wondered if an electromagnet could be made to work this way. I understand that magnetic fields are usually circular, but could they be focused into more of a linear beam. I'm not sure what the practical use would be, but it would be interesting to see if you could attract a small object from say a foot away by just pointing a focused electromagnet at it. I'm just curious. Thanks.

2006-10-09 04:13:22 · 6 answers · asked by bernie_bernoulli 2 in Other - Science

a. a product
b. a reactant
c. both a product and a reactant
d. neither a product nor a reactant

2006-10-09 04:13:14 · 10 answers · asked by Girl 4 in Biology

How is volcanism related to plate boundaries?

2006-10-09 04:12:55 · 3 answers · asked by Anonymous in Earth Sciences & Geology

a. simple sugars are made of polysaccharides
b. Glycerol is made of fatty acids
c. RNA molecules are made of nucleotides
d. Amino acids are made of protein

2006-10-09 04:11:55 · 24 answers · asked by Girl 4 in Biology

a. reactant
b. solution
c. solute
d. solvent

2006-10-09 04:10:23 · 13 answers · asked by Girl 4 in Biology

Modern Geology estimates the age of the earth to be 4.5 billion years. This is not
universally accepted as fact. Would there be a conflict between the theory of Plate
Tectonics and the idea of a much younger Earth?

2006-10-09 04:10:14 · 4 answers · asked by Anonymous in Earth Sciences & Geology

If the sides of a square are decreased by 3 cm, the area is decreased by 81 cm2. What were the dimensions of the original square

2006-10-09 04:08:16 · 12 answers · asked by lawanda p 1 in Mathematics

2006-10-09 04:07:55 · 11 answers · asked by chandu 1 in Biology

D answer is ... "313"... bt i dunno how 2 go abt it.. help...related to permutations n combinations

2006-10-09 04:06:49 · 4 answers · asked by the_rip_roaring 3 in Mathematics

2006-10-09 04:03:12 · 2 answers · asked by avik_pramanik 1 in Physics

is not light slowed down by gravity? can its speed be increased?

2006-10-09 04:02:40 · 7 answers · asked by wodeaga 1 in Astronomy & Space

what do u think about aliens?

2006-10-09 03:59:05 · 14 answers · asked by fresh_new_attitude 1 in Astronomy & Space

2006-10-09 03:58:53 · 11 answers · asked by Aqsaqqal D 1 in Mathematics

2006-10-09 03:52:16 · 7 answers · asked by wlkingcloud 1 in Biology

2006-10-09 03:39:28 · 8 answers · asked by Chris M 2 in Weather

6x=12

2006-10-09 03:39:11 · 15 answers · asked by Anonymous in Mathematics

2006-10-09 03:38:19 · 8 answers · asked by Anonymous in Mathematics

2006-10-09 03:34:12 · 15 answers · asked by splandastic 3 in Mathematics

2006-10-09 03:31:27 · 11 answers · asked by BMW 1 in Mathematics

Fine of a baseball that crosses from the fron to the back of home plate, a distance of 0.3m, in 0.01 s.

2006-10-09 03:28:43 · 8 answers · asked by globesk8er999 1 in Physics

Thank about the Info. on size...
I would like to know of shape...

Curiosity...

2006-10-09 03:25:07 · 4 answers · asked by K' 1 in Biology

2006-10-09 03:23:01 · 5 answers · asked by unquenchablethirst 2 in Chemistry

The underground nuclear bomb explotions (like north korea) apparently creates a shockwave that is detected as an "artifical" earthquake. There are numerous seismic problems in Japan by natural geological processes. Is the nuclear explosion strong enough to trigger an unattended consequence (i.e. tip the balance for a major earthquake of natural causes)? There were a lot of these tests done in Nevada which is not far from California's San Andreas fault. Does that mean the forces involved are just not strong enough to significantly impact natural geological processes?

2006-10-09 03:20:13 · 6 answers · asked by timespiral 4 in Earth Sciences & Geology

2006-10-09 03:16:03 · 2 answers · asked by unquenchablethirst 2 in Chemistry

2006-10-09 03:10:54 · 2 answers · asked by nix 1 in Engineering

I would be exstremly gratful if someone could help me with this quesion

2006-10-09 03:10:26 · 14 answers · asked by john w 1 in Mathematics

Can one of you math genious post a milimeter(mm) conversion chart for me,i need to convert some US standards to mm's ,for an order. Thank you

2006-10-09 03:09:37 · 3 answers · asked by johnnyBgood 4 in Mathematics

prove that if
a^(n) - b^(n) = (a-b)[(a-b)^(n-1)+nk]
then "k" will come natural for n=any prime number.
Please provide the mathematical proof.

2006-10-09 03:08:49 · 9 answers · asked by rajesh bhowmick 2 in Mathematics

Interested...

Can someone also tell me...

"What is the relationship between the shape of an organism and its surface area to volume ratio???"

2006-10-09 03:08:10 · 4 answers · asked by K' 1 in Biology

2006-10-09 03:05:51 · 8 answers · asked by Steph :-) 3 in Earth Sciences & Geology