Science & Mathematics - 1 August 2007

A curve is traced by a point P(x,y) which moves such that its distance from the point A(-1,1) is three times its distance from the point B(2,-1). Determine the equation of the curve.

2007-08-01 13:21:13 · 2 answers · asked by val 2 in Mathematics

2007-08-01 13:13:16 · 6 answers · asked by Anonymous in Other - Science

2007-08-01 13:06:55 · 3 answers · asked by E B 1 in Medicine

A. 681
B. 1092
C. 1362
D. 3276

2007-08-01 12:53:50 · 2 answers · asked by Dinesh P 1 in Mathematics

I know from GR that energy produce space-time curvature. In quntum mechanics, the energy is quantized. Is the space-time quantized as well at the quantum mechanical level?

2007-08-01 12:53:47 · 2 answers · asked by BenL 2 in Physics

The side of a square measures 10 cm. What is the area?

20 square centimeters

40 square centimeters

50 square centimeters

100 square centimeters

2007-08-01 12:51:38 · 3 answers · asked by zerokun4 1 in Mathematics

2007-08-01 12:46:40 · 10 answers · asked by Clean Independent Energy 3 in Physics

I thought I read somewhere that the deer fly cycle runs about 4-5 weeks. We are going on 8 weeks with these pests here in Wisconsin. I usually enjoy a good run through my woods, but these pests have made it almost impossible. I am afraid to use deet when I go running as it would be absorbed through my skin really fast, and may be unhealthy for me. Is there any other products on the market that are natural or organic that would keep these pests off of me? How much longer am I going to have to put up with these pests? This is the worst season I can recall for them.

2007-08-01 12:45:00 · 2 answers · asked by cthbz 3 in Biology

This plant was given to me by an elderly lady that didn't remember the name. What looks like a spiny succulent, is actually a four sided flaccid rope, with the feel of Ultra-suede. The blooms look like purple Maypops but soft like the rest of the plant. http://s186.photobucket.com/albums/x47/RScott-02/?action=view¤t=DSCN4162.jpg RScott

2007-08-01 12:37:31 · 7 answers · asked by Anonymous in Botany

if possible, could u guys explain it in simpler terms plz..

2007-08-01 12:34:14 · 5 answers · asked by Manisha 2 in Astronomy & Space

2007-08-01 12:32:26 · 1 answers · asked by BenL 2 in Physics

Question specifies at high temperatures also ... i believe its something like this :

Sb2O3(s) + C(s) --> _______ + _______
thanks for the help

2007-08-01 12:30:22 · 1 answers · asked by Anonymous in Chemistry

2007-08-01 12:15:58 · 1 answers · asked by Cat's Eye Angie 3 in Biology

I believe it looks something like this:

BiBr3(s) + H2O(l) --> ____ + _____
thanks for your help ... need to balance it also :/

2007-08-01 12:11:50 · 1 answers · asked by Anonymous in Chemistry

Well...?
I know of certain cases. Ever heard of th mother lifting a 2 ton car car to save her baby? Very possible, why? Because of a "will" of life we dont understand. What about a woman who was in a hypnotic trance (120 lbs. woman by the way) with her hand stretched out before her, the arm would not bend with a 220 lbs. man pushing down on it. Your opinion?

2007-08-01 12:06:59 · 15 answers · asked by Anonymous in Parapsychology

2007-08-01 12:06:58 · 3 answers · asked by krolnzm 1 in Engineering

The shadow of an office building reaches across the street to a sidewalk 60 feet away when the angle of elevation for the sun is 72 degrees. approxametly how tall is the buliding?

A. 19.5 ft
B. 57 ft
C. 125 ft
D. 185 ft

2007-08-01 11:59:21 · 5 answers · asked by sdp 1 in Physics

Combustion of 10.68 mg of the compound yields 16.01 mg CO2 and 4.37 mg H2O. The molar mass of the compound is 176.1 g/mole. What are the empirical and molecular formulas of the compound

2007-08-01 11:58:07 · 5 answers · asked by Anonymous in Chemistry

a. Write a balanced chemical equation for this reaction.
b. What mass of KNO3 would be need to produce 18.4 liters of oxygen gas measured at 775 mmHg and 15 degrees Celsius.
c. What mass of KNO2 would also be produced?

2007-08-01 11:54:20 · 2 answers · asked by Anonymous in Chemistry

Question for sum1 who is an expert about anatomy or pressure pints?
can you possibly knock sum 1 unconcious without punching the head ,kicks below the beltetc by using pressure points and minimal force if so how???

2007-08-01 11:53:31 · 3 answers · asked by steadytrynahookup 1 in Medicine

Determine
a) gravitational field strength
b) how much would 85 kg astranout weigh on the asteroid.

2007-08-01 11:53:28 · 1 answers · asked by Anonymous in Physics

2007-08-01 11:52:01 · 4 answers · asked by Anonymous in Botany

Pole down to pole bisecting the world. Are there perils?

2007-08-01 11:49:36 · 9 answers · asked by rara 3 in Astronomy & Space

in the last 3 yrs weather all over the world has gone crazy. sunamis, hurricanes, floods, tornados, avalanche, blizzards, fires, volcanos, dust storms. something is going on all the time. please god help us!

2007-08-01 11:40:35 · 11 answers · asked by deborah l 2 in Weather

Susan left her home at 7 AM, driving her car at the rate of 45 mph. At 9 AM her sister Marion drove after her along the same highway, traveling at the rate of 60 mph. In how many hours will Marion pass Susan?

2007-08-01 11:40:04 · 8 answers · asked by Marriot_Plum23 1 in Mathematics

2007-08-01 11:36:45 · 11 answers · asked by Alexander 6 in Physics

If reactants and products are brought to 298k and h20(l) is formed? And what is the maximum amount of useful work that can be accomplished under standard conditions by this system?

I have no idea how to solve this question. I'm assuming it will probably use some enthalpies of formation, so the enthalpies of formation are:
c2h4(g) 52.30
h20(l) -285.83
c02(g) -393.5
02 0
Thanks alot for the help

2007-08-01 11:33:55 · 3 answers · asked by Will 3 in Chemistry

i do get shivers down my spine quite often, and freaks me out everytime been having more often these past months my friends say it's sugar rush some say it's nerve but I don't know what to believe

2007-08-01 11:31:04 · 12 answers · asked by Rodman 2 in Medicine

Is Calcium Iodate more soluble in pure water or in a solution containing KIO3?

2007-08-01 11:27:49 · 1 answers · asked by cbrice9 1 in Chemistry

Given:
[HCl] = 0.100 M
Vol. of HCl need to reach Equivalence = 7.5 mL
Vol. of HCl needed to reach 1/2 Equivalence = 3.75 mL

Questions:

1. Determine the pKb and the Kb of the ammonium ion?

2. Calculate the concentration (M), of the aqueous ammonia solution?

2007-08-01 11:21:57 · 1 answers · asked by cbrice9 1 in Chemistry