Science & Mathematics - 12 December 2007

what is cosmic radiation? and do you have a picture of it?

2007-12-12 07:43:03 · 2 answers · asked by Kristiiinn [= 2 in Astronomy & Space

i have this mathematician project that counts as my semester exam and i cant find what my guy invented or how he contributed to math

2007-12-12 07:42:35 · 13 answers · asked by daddys princess 1 in Mathematics

Can you all please explain fully what an electric shock is...

And how it occurs....

And how dangerous could they get?

2007-12-12 07:42:09 · 4 answers · asked by Anonymous in Other - Science

2007-12-12 07:41:14 · 4 answers · asked by Cookie A 1 in Mathematics

what is escape velocity ? It seems to me that any speed would eventually get you beyond a gravity well if you traveled long enough .Can someone help me out here?

2007-12-12 07:40:34 · 3 answers · asked by stvc1961 2 in Astronomy & Space

2007-12-12 07:38:43 · 3 answers · asked by jlofhrocks 1 in Botany

Simplify as much as possible making all exponents positive. Assume all variables represent positive numbers.
125^1/3

12^-3/2

x^3/5 * x^1/2

(9x^4y^2) ^1/2

(27x^3) ^-1/3
*I missed this day of class, can anyone help??

2007-12-12 07:38:39 · 4 answers · asked by mel 3 in Mathematics

Gravel is being dumped from a conveyor belt at a rate of 40 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile is 24 feet high? Recall that the volume of a right circular cone with height h and radius of the base r is given by V = [1/3]πr2h.

2007-12-12 07:37:57 · 2 answers · asked by Joe B 2 in Mathematics

A particle moves along a straight line with equation of motion s = t5 − 5 t4 Find the value of t (other than 0 ) at which the acceleration is equal to zero.

2007-12-12 07:37:11 · 2 answers · asked by Joe B 2 in Mathematics

3√6 - 6 √150

a. 27√6
b. 2√6
c. -3√6
d. -27√6

2007-12-12 07:33:43 · 6 answers · asked by . 1 in Mathematics

I missed two classes with strep, and this was covered in one of them. The book isn't working for me. Can someone walk me through, and give me an answer so I know that I'm doing it right? Please and thanks.

1) Green light has a wavelength of 5.0 x 10^2 nm. What is the energy, in joules, of one photon of green light? What is the energy, in joules, of 1.0 mol of photons of green light?

2) Calculate the wavelength of an electron with a mass of 9.11 x 10^-31 kg and a speed of 2.5 x 10^6 m.s^-1.

2007-12-12 07:33:27 · 5 answers · asked by Anonymous in Chemistry

Also, if you cooled the 30° air down to 10°, would there be any condensation?

2007-12-12 07:32:20 · 2 answers · asked by Ryan 2 in Other - Science

Please help.

2007-12-12 07:31:31 · 4 answers · asked by Aira A 1 in Mathematics

2007-12-12 07:30:44 · 2 answers · asked by Anonymous in Chemistry

Is sigma 2p filled first or pi 2p?

2007-12-12 07:30:01 · 1 answers · asked by Sam 6 in Chemistry

I have just come into possession of a used Telescope and am having trouble figuring out how it works. I have it assembled but can't see anything through the eyepieces that were provided. there are 3 (25mm, 4mm, 2.5mm) and since it is winter the skies are cloudy and I can't tell which lens is stronger so any info would be appreciated.

2007-12-12 07:29:29 · 4 answers · asked by troyd.smith 1 in Astronomy & Space

√49z^28 / 9

a. 49z^14 / 9
b. 7z^14 / 9
c. 7z^14 / 3
d. 7z^26 / 3

2007-12-12 07:28:31 · 7 answers · asked by . 1 in Mathematics

Hi, I am a young adult who has suffered with "calcified tumors" and calcium deposits in mass amounts on my femur bone and the muscles surrounding my hip for 12 yrs now. I now know what Type of doctor I need. MY Question is where can I find a Directory that lists doctors practicing in Othopedic Onocology?? IS there a Website that lists Onocologists by practice?? --- If you know of a Directory or helpful link Please List them for me.

2007-12-12 07:28:12 · 1 answers · asked by snowbunny360 3 in Medicine

what is corpuscular radiation and is it able to captured on camera?

2007-12-12 07:27:06 · 1 answers · asked by Kristiiinn [= 2 in Astronomy & Space

for a Nickel-Barium cell: idnetify the cathode, anode, redox reaction, positive voltage and indicate the direction of electron flow.
(this is a cell that has a salt bridge, a wire connecting Ni and Ba, and voltmeter)

can some help me out PLEASE?
thanks:)

2007-12-12 07:23:17 · 1 answers · asked by xyz 1 in Chemistry

2007-12-12 07:23:04 · 5 answers · asked by lee f 5 in Geography

2007-12-12 07:19:26 · 1 answers · asked by Anonymous in Botany

calculate the change that occurs in pH when 0.010 moles of gaseous HCl is added to 1.0L of the following solution:
Solution A: 6.00M HC2H3O2 and 5.00M NaC2H3O2

pH of solution A?
pH of solution A and HCl?

can someoe please help me answer this? and explain how it is done.
THANK YOU

2007-12-12 07:18:59 · 1 answers · asked by abc 1 in Chemistry

Rumors say it is

2007-12-12 07:15:59 · 15 answers · asked by Anonymous in Astronomy & Space

I found a clear stone with square sides. I think it is clear quartz.

2007-12-12 07:13:26 · 5 answers · asked by Anonymous in Earth Sciences & Geology

1.Hydrochloric acid solution and sodium hydroxide solution are mixed in a container. The reaction is allowed to occur, and then aqueous silver nitrate is added to the same container. Assuming that everything reacts completely (none of the starting compounds are left after they react), what compounds are present in the container at the end of the experiment?

2. If copper(I) sulfide is partially roasted in air (reacts with O2), copper(I) sulfite is first formed. Subsequently, upon heating, the copper(I) sulfite thermally decomposes to cuprous oxide and sulfur dioxide. Write balanced chemical equations for these two reactions.


answers would be nice, but just teaching me or walking me through how to do these problems are great as well.

2007-12-12 07:13:22 · 2 answers · asked by rocko 1 in Chemistry

2007-12-12 07:10:14 · 10 answers · asked by james w 2 in Zoology

Is it to do with the cold weather?

2007-12-12 07:09:34 · 3 answers · asked by rojerwilko 1 in Weather

2007-12-12 07:09:26 · 3 answers · asked by shamu 1 in Chemistry

is it a country? or is it like a city type of thing? i need to know where its located. thank you

2007-12-12 07:08:38 · 24 answers · asked by Amy S 1 in Geography