Science & Mathematics - 22 September 2007

2007-09-22 05:10:23 · 7 answers · asked by ChadBF 1 in Chemistry

(Jim is able to sell a hand-carved statue for $670 which was a 35% profit over his cost. How much did the statue originally cost him?) I dont need the answer to it...I just want the formula to figure out a problem like this.

2007-09-22 05:09:42 · 7 answers · asked by Anonymous in Mathematics

can someone help me plz? i need the radius of orbit around the sun of the 9 planets. does anyone know?? (trying to prove kepler's formula)

2007-09-22 05:06:49 · 10 answers · asked by no-one listens... 2 in Astronomy & Space

2007-09-22 05:06:45 · 4 answers · asked by Anonymous in Mathematics

Why does it feel hotter when passing your finger over a flame, as opposed to through the middle?

2007-09-22 05:01:26 · 2 answers · asked by supernothingx 2 in Chemistry

Steven stopped for a drink of water when he had completed 60 percent of a jog. At that point, he had jogged 3 miles. What is the total distance he jogged 3 miles. What is the total distance he jogged?

(A) 2 miles
(B) 3 miles
(C) 4 miles
(D) 5 miles

If you know the answer, please include a brief explanation too! Thank you! I appreciate it. =]

2007-09-22 04:55:53 · 6 answers · asked by H.J. 3 in Mathematics

2007-09-22 04:54:45 · 6 answers · asked by nathalie b 1 in Chemistry

2007-09-22 04:54:16 · 3 answers · asked by Curious 1 in Chemistry

Peter and Danny are standing opposite of one another on a carousel which is turning counterclockwise. Peter throws a ball directly towards Danny.

a) The ball gets to Danny.
b) The ball goes to the right of Danny.
c) The ball goes to the left of Danny.

2007-09-22 04:54:13 · 5 answers · asked by ? 6 in Physics

A particle moves in such a way that
x(t)= 1/3t^3-3t^2+8t is the position of the particle when t is greater than 0.

when t=3, what is the total distance the particle has traveled? include turning point and correct total distance!
ahh this is a 1973 Free Response AP CAlculus ab question and i have no clue how to solve it!!!!!!!! please help soon! :)

2007-09-22 04:51:01 · 2 answers · asked by Anonymous in Mathematics

A stock solution containing Mn2+ ions was prepared by dissolving 1.748 g pure manganese metal in nitric acid and diluting to a final volume of 1.000 L. The following solutions were then prepared by dilution:
For solution A, 50.00 mL of stock solution was diluted to 1000.0 mL.
For solution B, 10.00 mL of solution A was diluted to 250.0 mL.
For solution C, 10.00 mL of solution B was diluted to 500.0 mL.

Calculate the concentrations of the stock solution and solutions A, B, and C.

2007-09-22 04:49:51 · 3 answers · asked by Anonymous in Chemistry

1) for seperation of a mixture by paper chromatography, what are the components of the green food coloring qualitatively and quantitatively?

2) what can be concluded about the identity of the components in the unknown mixture? Qualitatively and quantitabily

2007-09-22 04:47:20 · 1 answers · asked by Anonymous in Chemistry

1. In a 100 meter race Maggie and Judy cross the finish line in a dead heat, both taking 10.2 seconds. They both accelerated uniformly and Maggie took 2s and Judy took 3 to attain max. speed, which they maintained for the rest of the race. a)what was the acceleration of each. b)what were their max. speeds? c)which sprinter was ahead at the 6.0 second mark and by how much? 2. a jewel thief steals a golden egg from the third floor of an office building. Police enter and the thief runs to hide on an upper floor. To be free of the evidence, the thief drops the egg out the window. A detective on the 3rd floor sees the egg falling and times it as it passed the lower half of her window. The floors of the building are located 4 m apart. The egg took 0.101 s to fall 1.50 m past the lower part of the detective's window. The bottom of the detective's window is 8 m above the ground. On what floor is the thief hiding??
Anyone that can help I would really appreciate it. Thanks in advance!

2007-09-22 04:41:54 · 1 answers · asked by Anonymous in Physics

2007-09-22 04:38:19 · 4 answers · asked by Joseph C 2 in Engineering

has any one visited mars...? i mean how r scientist so sure theres water on mars??? and where else r they planning to go?? i mean i heard on jupiters moon.....? is that true?

2007-09-22 04:31:06 · 5 answers · asked by fass 2 in Astronomy & Space

Example: Observing Changes...

2007-09-22 04:26:32 · 2 answers · asked by synni ♪ 3 in Chemistry

When I was in the Navy back when I saw a fish that was about a foot long. Had a bulbous head and a long slender body, it was white or silverish in color. Two big eyes on the sides, only about a foot long, but for the life of me, it reminded me of a needle. The body had no fins that I could see and was straight and fairly stiff. The tail came to a point, just like a needle. I have always wondered what it was called? I have never seen pictures of it anywhere, not even on Discovery Channel. Does anyone have a clue what it was?

2007-09-22 04:25:17 · 8 answers · asked by Anonymous in Other - Alternative

We had a 2 day cold snap here where the temperature dropped into the high 40's at nite and around 63 degrees in the daytime. I about froze to death. It made me feel like an ice pop and I know the warm weather is going away within the next few weeks here in Illinois.
Any suggestions to make fall/winter better?

2007-09-22 04:24:45 · 9 answers · asked by happydawg 6 in Weather

That Galileo discovered.
I have a project on him due Monday, and I don't understand the definitions I've found.
Thanks. :)

2007-09-22 04:24:30 · 5 answers · asked by Marissa 1 in Astronomy & Space

Automobile air bags are inflated by nitrogen gas. When a significant collision occurs, an electronic sensor triggers the decomposition of Sodium Azide to form nitrogen gas and sodium metal. THe nitrogen gas then inflates nylon bags, which protect the driver and front-seat passenger from impact with the dashboard and windshield. What volume of nitrogen gas measured at 1 atm and 27 degrees C is formed by the decomposition of 100g of Sodium Azide?

2NaN3 ---> 2Na + 3N2

Please help

2007-09-22 04:21:45 · 2 answers · asked by Gillbates 2 in Chemistry

i have heard of sites that you can go on and look up your address and view your house from space, satalite whatever? is there a site and if so what is it

2007-09-22 04:19:50 · 7 answers · asked by Rhonda A 1 in Physics

2007-09-22 04:08:27 · 4 answers · asked by sheilacabrera67 1 in Mathematics

OK so for my lab I was collecting data for the properties of solutions in electrolytes and nonelectrolytes.
My group A solutions included CaCl^2, AlCl^3, and NaCl? Each had 0.05 M
Then I collected the conductivity for each using a probe and I got:
CaCl^2- 8210 conductivity
AlCl^3- 4993 conductivity
NaCl- 6502 conductivity

Now, why is it that the group A compounds, each having the same concentration (0.05 M) have such large differences as far as conductivity values? How could I write an equation of dissociation for each?

Please help!

2007-09-22 04:07:06 · 2 answers · asked by Anonymous in Chemistry

2007-09-22 04:06:44 · 3 answers · asked by Anonymous in Physics

Please explain fully, I just don't get the concept. Thanks all.

2007-09-22 04:06:34 · 2 answers · asked by Anonymous in Physics

measurment be on his model? PLEASE HELP :(. Just tell me how to do it. MY math teacher says to do 2/8=x/28 as a proportaion but I dont know how :( Please help :)

2007-09-22 04:05:06 · 4 answers · asked by Anonymous in Mathematics

2007-09-22 04:03:58 · 28 answers · asked by Anonymous in Mathematics

answer: - sqrt6/4 + sqrt2/4 + 1/2
How do I get to there? I have never rationalized with 3 numbers before and I tried doing it by multiplying both sides to get rid of the square root but I just end up with a new problem all over again! I feel so limited just to one formula.. problem is that hteres the xtra variable. I duno how to get rid of the one, I tried doing like 1/1 + 1/sqrt2 + 1/sqrt3 and try to cancel sqrt invididually but that didnt seem to work either... iduno.. maybe I am just dumb at this

2007-09-22 03:58:13 · 5 answers · asked by Tanja 2 in Mathematics

i have no idea how you would solve this so can some one please show me the steps to solve it??? please thanks!!

2007-09-22 03:58:08 · 2 answers · asked by Anonymous in Mathematics

2007-09-22 03:51:02 · 1 answers · asked by JAI VIGNESH 1 in Physics