Science & Mathematics - 16 January 2007

Consider a pt in the first quadrant and on the parabola y=4-x^2. If we draw a tangent at this point, the tangent , x axis and y axis form a triangle. Find the coordinates of the point on the curve so that the area of this triangle is 6.5 units.

(I got 1/13, Im not sure though. And they say the other answer is 2705/676. I dont know how to get it)

2007-01-16 17:11:41 · 7 answers · asked by aimsnapfall 2 in Mathematics

Can someone explain to me how it is theoretically possible to time travel. How can time travel comply with the laws of nature? My friend was trying to explain this to me, but I'm still trying to figure some parts out.

2007-01-16 17:09:45 · 5 answers · asked by micah_09 4 in Physics

please explain

Given two vectors, one has a magnitude of 3 meters and a direction of 10 degrees and the second has magnitude of 5 meters and a direction 30 degrees. What is the magnitude and direction of their sum? The angles in this problem are relative to the positive x axis.

2007-01-16 17:06:34 · 5 answers · asked by GSU 1 in Physics

Given a vector with components, x = 2 , y = 5 , find the vector’s magnitude and direction.

please explain

2007-01-16 17:05:16 · 4 answers · asked by GSU 1 in Physics

2007-01-16 17:04:09 · 7 answers · asked by Dhiman B 2 in Astronomy & Space

If I have a vector with magnitude 2km and a direction of Southwest, what are its components in terms of North and East?

Please explain

2007-01-16 17:03:27 · 2 answers · asked by GSU 1 in Physics

I love geniuses going against each other's beliefs....

Einstein vs. Bohr...

The relativists vs. the quantum physicists...

Unfortunately I'm with both ends of the line...


Personally, I would go with whatever Einstein say..I especially like his deterministic view of the universe but the quantum physicists really have strong points in their quantum theory....

After Einstein's death, I don't know what had happened with their disputes...did Bohr retracted his claims? probably not because there wouldn't be any quantum mechanics if he did....

2007-01-16 17:01:42 · 8 answers · asked by karl 4 in Physics

2007-01-16 16:58:58 · 14 answers · asked by sandeep k 1 in Astronomy & Space

Which isn't to say all creationists fall into this category, but the ones who rant here seem to. They don't understand the science; they further don't seem to understand the religion either. The "conflict" between religion and evolution is a false one that came about for a variety of socio-political reasons. I know some southern baptist preachers who believe in evolution, and likewise most evolutionary biologists I've met are Christians who attend church regularly. There IS NO CONFLICT. Evolution doesn't reject God anymore than the theory of gravity rejects Him as opposed to having people believe that God personally keeps us all from falling off the planet. Rather, all science, including evolution, illuminates the mechanism by which God chose to effect creation, and makes the creation that much more amazing in the process. Anyone who tells you Christianity and evolution have to be opposed to each other is a complete nutjob.

Why are these loons attracted to this site?

2007-01-16 16:58:41 · 7 answers · asked by Musmanno 2 in Other - Science

PLEASE HELP. show step by step ? :]]

2007-01-16 16:54:51 · 10 answers · asked by stranger 1 in Mathematics

what country, mountain sites, city

2007-01-16 16:51:57 · 9 answers · asked by gordie542 1 in Geography

do you blame me.?I didnt like seeing that one that time. just sitting their in the sky, like it owned the place.a large silver saucer shaped craft right above this building in daytime. blue skys.TRUE.I say shoot at them, what do you say?

2007-01-16 16:44:57 · 8 answers · asked by Anonymous in Astronomy & Space

i have to take a seminar on the topic equalizers and their functions im the field of electronics and communication. please help me...

2007-01-16 16:43:18 · 1 answers · asked by aReNPee 1 in Engineering

How many spiders crawl up and into our mouths during an average life time?

2007-01-16 16:42:38 · 9 answers · asked by Anonymous in Biology

prefer the sedgewick county area?

2007-01-16 16:41:19 · 4 answers · asked by delivrygrl 3 in Paranormal Phenomena

Hi all, I was hoping you could help me solve this question. I’m 19 years old and recently had another growth spurt 8 months ago in my knees where I grew an inch in a week and have grown 3 more inches since, but during it I was eating a lot of soy bread, and I was wondering if the phytoestrogens in the soy bread might have caused the growth spurt leading to a premature closure of the growth plates in my knees and thus stunting my growth, or if I was just genetically programmed to have a late growth spurt at this age?
I ask this because I read up that estrogen and testosterone convert to estradiol, which is the hormone responsible for the growth plates in our bones closing and I was unsure if the phytoestrogens in the soy bread I was eating could do the same thing which might explain my sudden growth spurt, much in the same way that taking steroids can produce a sudden growth spurt but lead to premature closure of the growth plates due to rapid conversion of testosterone into estradiol

2007-01-16 16:38:51 · 3 answers · asked by randomiser 1 in Biology

an anti-cancer drug was given to 50 patients, while 50 more were given a placebo. all the patients were in the advanced stage of their desiease, and had life expectancies of 3 months, 25 of the patients with the placebo had died, and only 10 of the patients with the drug died. was this clinical trial a 'sucess'. why or why not?



i dont really like this question, its kinda sad

2007-01-16 16:38:10 · 3 answers · asked by kaitlin 2 in Medicine

Can you find the 10th? The first 9 are as follows...

1
11
21
1211
111221
312211
13112221
1113213211
31131211131221
____________________

2007-01-16 16:38:04 · 8 answers · asked by jd 1 in Mathematics

my friends were having a big debate, so i need some answers so they can stop arguing.. one says the temp of a beach doesnt change, on cold days or at night the beach feels warmer because your body temp is cooler, and visa versa, the other is saying that for some reason unknown to her, the beach temp raises at night and when it rains.. please help!

2007-01-16 16:37:42 · 1 answers · asked by Amy D 1 in Weather

for example
x=3
&
3x+y=5

2007-01-16 16:36:10 · 9 answers · asked by DaGhettoCinderella 2 in Mathematics

"Why should a species give up the defining core of its existence, built by millions of years of biological trial and error?"

2007-01-16 16:35:54 · 4 answers · asked by aiLeEn 3 in Biology

True for all nonnegative values of x^2? Please explain

2007-01-16 16:32:36 · 8 answers · asked by Shawna P 1 in Mathematics

2007-01-16 16:28:31 · 4 answers · asked by georgie0515 1 in Chemistry

2007-01-16 16:26:38 · 3 answers · asked by Azam R 1 in Chemistry

2007-01-16 16:22:06 · 13 answers · asked by John S 2 in Zoology

I need them ALL, every last one and they must be correct. PLEASE!!???

2007-01-16 16:21:37 · 11 answers · asked by Anonymous in Mathematics

2007-01-16 16:20:27 · 6 answers · asked by ib 1 in Astronomy & Space

My sis walks to skewl (15 min walk in winter) & I work (5 min walk) but @ work sometimes they don't make it in to work due to bad weather. I think this one lady doesn't go just cuz it snows :s
It's been a nice winter up here where we live but in the past wk there have been 3 snow days in a row for my sis. So she went home. I don't think that there's any given yr when the weather's too bad to go to skewl. (At my work they take a lot of factors in to consideration: wind chill, amount of snow, etc)

Anyone know ? Are there any weathermen/women on here ? :P

2007-01-16 16:18:35 · 2 answers · asked by Anonymous in Weather

A guy walks into a 7-11 store and selects four items to buy. The clerk at the counter informs the gentleman that the total cost of the four items is $7.11. He was completely surprised that the cost was the same as the name of the store. The clerk informed the man that he simply multiplied the cost of each item and arrived at the total. The customer calmly informed the clerk that the items should be added and not multiplied. The clerk then added the items together and informed the customer that the total was still exactly $7.11.

What are the exact costs of each item?

2007-01-16 16:17:17 · 5 answers · asked by victor v 2 in Mathematics

Two dice are rolled and the two numbers on the dice are added. List all the outcomes that have a probability of less than 1/9. Thanks a lot!

2007-01-16 16:16:31 · 3 answers · asked by katerina 1 in Mathematics