Science & Mathematics - 26 July 2007

1. How must a right circular cone be cut in such a way as to reveal a parabola?

2. What will you get if a right circular cone is cut parallel with the axis of symmetry?

2007-07-26 18:44:02 · 2 answers · asked by Anonymous in Mathematics

Today at work around 2pm I heard a loud rumble just like an earthquake and I looked around to see if anyone was just pushing a desk or something heavy but nobody was. It lasted about 10 seconds and the girl next to me heard it too. Nothing shook at all and then it stopped. When I got home I checked the earthquake report website and indeed there was a 2.0 earthquake about 20 miles from here.

Can you hear an earthquake but not feel it?

2007-07-26 18:39:57 · 6 answers · asked by jon 2 in Earth Sciences & Geology

Please help! thanks!

2007-07-26 18:34:49 · 12 answers · asked by Anonymous in Mathematics

What is the chances that the pocket that is really small? They had to cap it off and the company is offering to buy the mineral rights to the land for 150,000 dollars. They won't tell either way how much they think is down there. How big is the average natural gas pocket?

2007-07-26 18:30:15 · 5 answers · asked by Peggy Pirate 6 in Earth Sciences & Geology

I just need some help on this.

Why is there are stronger effect of gravity on the North Pole than anywhere else in the world?

All help will be appreciated!

2007-07-26 18:29:30 · 29 answers · asked by penguinleo 1 in Physics

Why do we need to live threre ?

2007-07-26 18:27:07 · 12 answers · asked by Anonymous in Astronomy & Space

In a certain colony of bacteria, each bascillus divides into 2 every hour. If at the end of the first hour there are 2, how many will there be after 24 hours?

What kind of progression is applicable in this problem?

2007-07-26 18:21:09 · 5 answers · asked by Anonymous in Mathematics

2007-07-26 18:17:36 · 4 answers · asked by SHAH P 1 in Mathematics

would you please help me with this problem,

18.0 g oxygen reacts with sufficient nitrogen to make 25.9 g of nitrogen dioxide according to the following reaction:
O2(g) + N2(g)----> 2NO2(g)
If the reaction goes to completion, how much nitrogen reacted?

2007-07-26 18:17:19 · 4 answers · asked by lulu 1 in Chemistry

There are some compounds that end in 'hydroxide', for example, calcium hydroxide, or sodium hydroxide. But there are also compounds that end in 'oxide' such as copper oxide. So what is the difference between the compounds ending in 'hydroxide' and the ones ending in 'oxide'?

2007-07-26 18:16:04 · 7 answers · asked by Anonymous in Chemistry

is it deadly to eat a human brain?

2007-07-26 18:12:02 · 16 answers · asked by nite_blufarie 2 in Biology

2007-07-26 18:10:44 · 3 answers · asked by ỉη ץ٥ڵ 5 in Astronomy & Space

the problem is:

y''' - 6y'' + 11y' - 6y = e^t, y = y(t), y'=dy/dt

I don't know how to use annihilators method. Can you show how to do the problem?

2007-07-26 18:06:22 · 3 answers · asked by gibsongtar101 3 in Mathematics

like for example, science logically states that if matter exists,anti-matter is also existant which means that for every reaction there is the contrary reaction to it

2007-07-26 18:03:32 · 9 answers · asked by Anonymous in Other - Science

5
18 3/4
9
12

2007-07-26 18:02:02 · 20 answers · asked by AnswerMeThis 1 in Mathematics

or how ever it is written.

2007-07-26 18:00:02 · 7 answers · asked by AnswerMeThis 1 in Mathematics

I have not had math in a long time...and I forget how to find the mean and the median of #.

I dont remember if I have ever did this so if some one can plzz explain it to me step by step...

plzz and thanx <3

2007-07-26 17:59:46 · 11 answers · asked by Anonymous in Mathematics

3:3, 4:1

8:2; 16:4

1:5; 4:1.5

1:5; 15:3

2007-07-26 17:55:42 · 2 answers · asked by AnswerMeThis 1 in Mathematics

what are the materials that are required for preparing a ganjai cigarette?

2007-07-26 17:55:10 · 3 answers · asked by aditya_sthanam 1 in Medicine

I have had Algebra 1, Alg. 2, geometry, and college algebra in high school with an "A" in all classes; yet I am not sure if I have the background to go straight to calculus without trigonometry. Will it be too much with calculus and chemistry for my freshman year?

2007-07-26 17:53:18 · 6 answers · asked by Anonymous in Mathematics

every 6 minutes the water drips 27 times. Find the ratio of drips to minutes to simply form
homework problem...cant solve this one lol

2007-07-26 17:52:42 · 4 answers · asked by AnswerMeThis 1 in Mathematics

I'm using graphite electrodes with the electrolyte as sodium bicarbonate. There's a strange smell that emits from the electrodes. What is that smell, and should I be worried about it?

2007-07-26 17:51:43 · 2 answers · asked by Jet Flyer 2 in Chemistry

find b so that the eccentricity is .75

2007-07-26 17:38:09 · 4 answers · asked by bilinmz 1 in Mathematics

"Write balanced equations for the complete combustion of these hydrocarbons. List the hydrocarbon as the first reactant. List the carbon containing product as the first product. Enter formulas with coefficients without a space between the formula and its coefficient. In this question, leave off coefficients of 1 (1 is implied)."

1) propane, C3H8
____ + ____ -----> ____ + ____

2) benzene, C6H6
___ + ___ --------> ____ + _____

3) octane, C8H18
___ + ____ ------> ____ + ____

2007-07-26 17:36:57 · 5 answers · asked by lulu 1 in Chemistry

Consider the function f(t)=8sec^2(t)–10t^2. Let F(t) be the antiderivative of f(t) with F(0)=0.
Then F(3)= ???

Thanks for any help/suggestions/hints/solutions (along with explainations of how you reached that solution)...
I appreciate it!

2007-07-26 17:36:31 · 3 answers · asked by Anonymous in Mathematics

but this guy doesnt seam to know any physics

2007-07-26 17:35:19 · 4 answers · asked by Anonymous in Engineering

Euclidean space is the one place where all space is flat and orthogonal. However, this is a special case of curved space (where the curve is zero). Therefore, to me, all our succeeding mathematics and science measured constants are based on a special case. For example does gravity act at 32 ft/sec/sec if space is curved? no, only where space is flat. I believe that the proper methodology of the metrics of space is rotational (i.e. x, y, z all rotate (twist) about the origin). For example, light does not project linearly from origin outward at C 186,000 mi/sec, but rotates about the origin at a particular (angular) velocity. For example, the value of C can be found to be 144,000 min of arc per second. Other metrics of time-space would then be similarly re-calculated to have rotational metrics. Bruce Cathie (NZ mathematician) then proposes that these metrics of light, mass, and gravity can be seen to create harmonics of each other. Thoughts?

2007-07-26 17:28:13 · 7 answers · asked by thehighsierradrifter 1 in Astronomy & Space

2007-07-26 17:26:38 · 2 answers · asked by arzachikisa 1 in Earth Sciences & Geology

couldnt it be possible were going about space travel all wrong? Im just thinking out loud here

2007-07-26 17:25:47 · 4 answers · asked by Anonymous in Astronomy & Space

2007-07-26 17:20:58 · 9 answers · asked by Anonymous in Other - Science