Science & Mathematics - 29 November 2006

a) 4
b) 28
c) 22
d) 18

2006-11-29 02:13:53 · 19 answers · asked by Tony R 1 in Mathematics

2006-11-29 02:13:46 · 3 answers · asked by jsjmlj 5 in Astronomy & Space

pls explain it

2006-11-29 02:12:06 · 12 answers · asked by john 1 in Zoology

Which one of the following reagents is capable of transforming Cu2+(1 M) to Cu(s)?

a) I– (1 M)
b) Ni(s)
c) Al3+(1 M)
d) F– (1 M)
e) Ag(s)

I think its B, Nickel...can anyone confirm this?

2006-11-29 02:11:03 · 2 answers · asked by Erin C 1 in Chemistry

2006-11-29 02:10:35 · 2 answers · asked by red-poka-dot-joe-bird 1 in Physics

I'm very curious about him.

2006-11-29 02:09:49 · 2 answers · asked by Anonymous in Other - Science

a) 4/64
b) 21/64
c) 10/16
d) 1/2

2006-11-29 02:09:49 · 12 answers · asked by Tony R 1 in Mathematics

a) 4/8
b) 1/2
c)4/12
d)2/8

2006-11-29 02:08:06 · 13 answers · asked by Tony R 1 in Mathematics

I would enjoy a url!!

2006-11-29 02:07:32 · 8 answers · asked by djkosa 1 in Astronomy & Space

2y^3+2y^2-12y+9<0

2006-11-29 02:07:20 · 5 answers · asked by Phill W 1 in Mathematics

2006-11-29 02:06:56 · 15 answers · asked by Anonymous in Physics

a)True b)False

2006-11-29 02:06:20 · 5 answers · asked by Tony R 1 in Mathematics

2006-11-29 02:04:36 · 22 answers · asked by forest lover 2 in Weather

Quite often (on the news for example) you see people in crowds who fire their guns into the air in celebration. Presuming the guns they fire are loaded with bullets and not blanks, do the bullets that fall back to the earth ever injure or kill people, or is their decent slowed enough by gravity not to do harm?

2006-11-29 02:01:48 · 17 answers · asked by martin 1 in Physics

Problem ONE: Diane took 1 1/2 times as long to complete her project. If Diane needed 9 hours, how long did Amy take to finish her project?
Answer: 7 1/2.

Problem TWO: Maria's pay last week was $585. This was after 1/4 of her pay was taken out for insurance and taxes. How much did Maria have before the deductions?
Answer: Pay before deductions was $731.25.

And I need help figuring out the following answer:
Problem THREE: Joan and Gayle sold 89 magazines. If Joan sold one more than three times what Gayle sold, what was the number sold by Joan?

Thanks for the help in advance!

2006-11-29 01:58:45 · 4 answers · asked by BadRomance 2 in Mathematics

2006-11-29 01:55:25 · 7 answers · asked by martin 1 in Physics

All the procedures tell that we must use drying agent in the solvent to remove water. But why it is so important? I evaporate all my solvent then I put my extract in solution with methanol and then measure concentration. I could understand that impurities in water could affect my experiment if I'd take the mass of my extract but, in my case, only the concentration of a compound X.

Thanks

2006-11-29 01:55:23 · 2 answers · asked by Anonymous in Chemistry

how does the blanket toss (where natives up north gather in a circle and they lift someone high up in a blanket....ok that didn't make sense...its kind of like a trampoline if that helps...) but how does the blanket toss show an energy tranformation?

2006-11-29 01:53:16 · 2 answers · asked by Anonymous in Other - Science

It has something to do w/ 3 numbers...A, G, and P.

2006-11-29 01:52:18 · 1 answers · asked by cboykin18 2 in Other - Science

I asked a similar question about a week ago, thanks for the answers, but what I really need to know is if I can go from digestion to dephosphorylation to ligation WITHOUT a purification step in between. I am using Promega Xba1, Roche CIP and can either use Invitrigen or NEB ligase. The vector is about 14kb long and my bugs don't seem to like it! I get after a mini, about 40ng/microlitre, so I can't afford to lose anything with purification. I can't afford to run any on a gel to see if anything has worked. I've tried gel purification with columns, cleaning through a mini prep column, even the old style 'freeze squeeze' but each time I lose too much. Is purification NECCESSARY and if not, does anyone know if the buffers will be compatible?

2006-11-29 01:52:07 · 4 answers · asked by cheetara_2001 2 in Biology

i mean there is heat, light, chemical, electrical...and so many more. whats the purpose of that? why isn't there just like light and nothing else? what do you think?

2006-11-29 01:51:06 · 5 answers · asked by Anonymous in Other - Science

Assuning a source Voltge of 0.8V, Determing the curretn in a 50mW LED(Light emitting diode)

If anyone can solve this, can you please explain any formula used to solve alonge with the answer?
THank you

2006-11-29 01:47:32 · 4 answers · asked by jeep10455 2 in Engineering

2006-11-29 01:44:00 · 2 answers · asked by cwood2281 1 in Botany

2006-11-29 01:43:06 · 10 answers · asked by ****** 1 in Medicine

How many coulombs of electrical charge must pass through an electrolytic cell to reduce 0.82 moles of Ca2+ ion to calcium metal?

a) 3.9e3
b) 1.6e5
c) 7.9e4
d) 4.2e–6
e) 4.0e4

I got b, 96500 x 2 = 193000 x .82 = 158260 ...im not sure Im doing this right...

2006-11-29 01:41:28 · 1 answers · asked by Erin C 1 in Chemistry

is there any problems if i do weight training during course of antibiotics. or after taking injection. I forgot to ask my doc.

2006-11-29 01:39:36 · 7 answers · asked by Ren 2 in Medicine

In eukaryotes, it is not uncommon for a single effector protein to regualte the synthesis of several different proteins encoded by distinct RNAs. Explain in molecular terms how this could happen?

2006-11-29 01:38:33 · 1 answers · asked by Ashi 2 in Biology

2006-11-29 01:38:29 · 8 answers · asked by Anonymous in Biology

A mutant is found in which the operon is uninducible. Assuming the affected gene makes a protein, what kind of transcriptional regulator could the gene produce?

2006-11-29 01:37:47 · 1 answers · asked by Ashi 2 in Biology

2006-11-29 01:36:20 · 3 answers · asked by Sarah S 2 in Weather