Science & Mathematics - 29 January 2007

See if you can get it...

Find dy/dx of the integral of sin(t^2), on the interval [0,sqrt of x]

it is sin(t^2) not x^2!

2007-01-29 16:08:09 · 3 answers · asked by venom90011@sbcglobal.net 1 in Mathematics

I need to get two answers for x at the end

2007-01-29 16:08:04 · 5 answers · asked by ashleygiardina 1 in Mathematics

The figure (http://img442.imageshack.us/img442/1415/chapter5testnumber2ys9.png) shows a triangle in the coordinate plane along with a smaller triangle formed by joining the midpoints of the sides of the larger triangle. How could you use a series of transformations of triangle ABC to produce triangle DEF? Write a rule (in the form P(x,y)--->P'(?,?) ) for each transformation in your series that shows how the coordinates of the transformed figure are obtained. Use your rules to find the coordinates of each vertex of the triangle after each transformation. Lastly, write a rule that would transform ABC into DEF by just one transformation.

2007-01-29 16:06:30 · 1 answers · asked by Dan 1 in Mathematics

what do I have to do to get and answer to a question similar to this: (5a^3+4b^2) I can't seem to do algebraic equations and it would help me a lot if I could check those kinds of answers on tests.

By the way if anyone is confused (^2) means squared. Of course if you're advising me about my calculator you'd probably already know that, but just so I don't leave any stone unturned. Thanks for your help, you've no idea how much it will help me!

2007-01-29 16:06:05 · 2 answers · asked by Anonymous in Mathematics

its for my chem class...i really need a touch up on my conversion factors...

2007-01-29 16:04:14 · 10 answers · asked by xXUntouchableXx 3 in Chemistry

and what is the equation of the combustion of the fart?

2007-01-29 16:03:21 · 3 answers · asked by Josh D 1 in Chemistry

What would be necessary to cause ammonia to react with hydrogen peroxide to produce nitrous oxide and hydrogen?
4(NH3)+(H2O2)=2(N2O)+7(H2)
Is there some sort of catylyst, or a specific temperature, or a certain pressure or level of purity that needs to be attained for this reaction to take place? If so, please respond. Your help would be greatly appreciated.

2007-01-29 16:02:48 · 1 answers · asked by Anonymous in Chemistry

I've seen waaay too many people in here criticizing it, they keep saying that by common sense, oil left on sand won't evolve into a cell phone. Something like that.

2007-01-29 16:02:01 · 7 answers · asked by Coffee-Infused Insomniac 1 in Other - Science

Illustrate the principle of mass conservation

2007-01-29 15:58:36 · 2 answers · asked by Anonymous in Physics

I'm sure this crossed into the unethical territory as well, but are there any laws stating this to be a crime?

2007-01-29 15:57:33 · 6 answers · asked by VoirDire 3 in Medicine

2007-01-29 15:56:11 · 5 answers · asked by Anonymous in Biology

2007-01-29 15:54:33 · 5 answers · asked by ♥y! answers_princess 2 in Astronomy & Space

Can someone help compute this integral:

f x ln(2x-1) dx

2007-01-29 15:54:02 · 2 answers · asked by re_defin3d 2 in Mathematics

i know its an asocial act but i cant stop,,ive been doing it for years and im only 19,,every joint cracks so easily and they feel stiff if i dont crack them

is it proven bad to do this to your hands?

2007-01-29 15:53:34 · 6 answers · asked by Anonymous in Medicine

it says use the disk method THEN the shells..

thanks in advance for any help!

2007-01-29 15:53:16 · 4 answers · asked by extreme98 1 in Mathematics

Calculate the osmotic pressure at 25°C of an aqueous solution of 1.00 g/L of a protein having molar mass=4.15×104 g/mol.




Calculate the freezing point depression of the above solution, if the density of the solution is 1.00 g/cm3. (units can be either "K" or "degC")

2007-01-29 15:52:54 · 2 answers · asked by Anonymous in Chemistry

if I have a nerve cell with a membrane potential of 0mV, and if I make it permeable only to Na+ ions. WHat would happen? Does it reach the membrane potential for Na+ and the stimulus goes on and on?

2007-01-29 15:50:49 · 4 answers · asked by ABC 4 in Biology

like information about saturn

2007-01-29 15:49:46 · 12 answers · asked by silly girl 2 in Astronomy & Space

The food we eat provides the building blocks (e.g. amino acids and simple sugars) for making organic molecules and provides the energy for generating ATP. Humans would therefore be classified as:

A) Heterotrophs

B) Photoautotrophs

C) Chemoautotrophs

D) Photoheterotrophs

Now, I know it's not B) nor D) because humans do not use light to obtain energy, it's either A) or C) but which one?

2007-01-29 15:48:00 · 10 answers · asked by ♥Curious♥chick♥flick♥ 2 in Biology

How are Nothern Lights Related to Magnetism?

2007-01-29 15:44:39 · 4 answers · asked by knd1994 2 in Physics

its for homewrk

2007-01-29 15:44:39 · 6 answers · asked by Anonymous in Geography

2007-01-29 15:44:28 · 3 answers · asked by taleb s 1 in Mathematics

maybe.

2007-01-29 15:43:49 · 5 answers · asked by ♥y! answers_princess 2 in Astronomy & Space

If someone could verify that I'm on track with the following, I'd be very grateful.

ferrous nitrate Fe(NO3)2
ferric nitrate Fe (NO3)3
and the numbers should be subscripts.
thanks in advance

2007-01-29 15:43:46 · 3 answers · asked by CrazyBirdMom 4 in Chemistry

2007-01-29 15:41:57 · 3 answers · asked by naenae 1 in Mathematics

Okay...this problem has me 100% lost...

-3/5 < 1/5 - 2/5w < -1/3

I'm supposed to "solve the compound inequality and state the solution set in interval notation" and I've got noooo clue where to even start. Anyone out there??

2007-01-29 15:40:49 · 5 answers · asked by nghek 3 in Mathematics

2007-01-29 15:40:45 · 5 answers · asked by Anonymous in Other - Science

Evolution is not solidly demonstrated. "Evolution is just a theory," Darwin's critics point out, as if "theory" meant lack of knowledge, some kind of guess. Scientists, however, use the word theory in a very different sense than the general public does. Theories are the solid ground of science--that about which we are most certain. Few of us doubt the theory of gravity because it is "just a theory"

i need help writing that in my own words, can someone please help me out! Thanks

2007-01-29 15:40:35 · 2 answers · asked by dancinqt0411 1 in Physics

2007-01-29 15:40:15 · 2 answers · asked by A7xd 1 in Mathematics

I'm taking Chemistry Honors and Algebra 2 Honors and I have an A in both classes so far, but my friends who are already in Physics Honors and/or Pre-Calc. Honors say that one or the other (but not both) is hard. I'm scared of getting bad grades in these courses next year (my senior year). Which class is harder so that I can prepare during the summer?

2007-01-29 15:40:11 · 2 answers · asked by Jimmy-Fer08 3 in Mathematics