Science & Mathematics - 30 December 2007

orbit?
my ques is
1.why can't eletron lose its energy in that paricular stationary orbit?
2.from where it get the energy?

2007-12-30 03:34:20 · 2 answers · asked by ontheblossom 1 in Physics

2007-12-30 03:32:48 · 10 answers · asked by Anonymous in Biology

A & B play game where they toss a coin. A starts first. The first one to get five heads wins. What is the probability of A winning? Even if you could give me some pointers to approach this, that will be great.

2007-12-30 03:30:40 · 12 answers · asked by newlex 2 in Mathematics

2007-12-30 03:28:28 · 16 answers · asked by shahanwarsi92 1 in Astronomy & Space

a swimmer plans to swim at least 100 laps during a 6 day period. During this period, the swimmer will increase the number of laps completed each day by one. Whats the least number of laps the swimmer must complete on the first day ?


Im not asking for answer, if someone could just show me how to set up the equation for this question

2007-12-30 03:22:31 · 8 answers · asked by helppmee =] 2 in Mathematics

Show that the value of f(0) does not depend on the choice of polynomial and find f(0).

2007-12-30 03:17:14 · 4 answers · asked by Anonymous in Mathematics

i always do maths very slow and make a lot mistake
How can i improve myself in maths study

2007-12-30 03:16:37 · 9 answers · asked by esa 1 in Mathematics

2007-12-30 03:16:10 · 49 answers · asked by Anonymous in Earth Sciences & Geology

-10 > ¦2x +1¦+7

The answer is -2 so does that mean the +7 stays positive being taken over?

2007-12-30 03:13:03 · 2 answers · asked by Anonymous in Mathematics

1. In triangle ABC, if an exterior angle drawn at vertex C measures 45 degrees then angle b
2.Two triangles have altitudes of equal length. If the areas of these triangles have the ratio 3:4 then the bases of these triangles have the ratio
3.

2007-12-30 03:11:30 · 1 answers · asked by MrJ 3 in Mathematics

2007-12-30 03:10:35 · 5 answers · asked by attitude 2 in Weather

prove it using Archemedes law.

2007-12-30 03:09:51 · 7 answers · asked by sonia h 1 in Physics

plz i need proper answers.....thankyou soo much

2007-12-30 03:09:25 · 2 answers · asked by attitude 2 in Weather

This "trick" invovles quickly pulling a table cloth from under plates. One would expect the plates to move with the table cloth but in reality the plates stay in their original position.

I know in terms of Physics this has to do with the plate's inertia, but my teacher wants a more advanced explanation.
Please give a more advanced explanation in terms of physics

2007-12-30 03:01:00 · 3 answers · asked by akanthasy 1 in Physics

My friend has his own machine shop so the parts could be fixed up and made to fit together, i would base it on the old V-2 rockets or the Mercury Redstone rockets only a tad bit larger.

2007-12-30 02:59:40 · 13 answers · asked by Anonymous in Astronomy & Space

LINK - http://uk.youtube.com/watch?v=U-3RLx_4Y5Y&NR=1

2007-12-30 02:57:44 · 32 answers · asked by Anonymous in Astronomy & Space

2007-12-30 02:54:30 · 3 answers · asked by Claudine A 1 in Chemistry

2007-12-30 02:48:24 · 15 answers · asked by Anonymous in Biology

i heard that some ants die after they bite once.
is it true??
if yes can u give some examples....

2007-12-30 02:44:23 · 16 answers · asked by The Questioner 1 in Zoology

Is this a loop hole in the international space treaty?

2007-12-30 02:40:44 · 7 answers · asked by Anonymous in Astronomy & Space

A giant shell kind of like a dysons sphere but way smaller than a dysons sphere.

2007-12-30 02:37:10 · 5 answers · asked by Anonymous in Astronomy & Space

Delta, Theta, Alpha, Mu Rhythm, Beta & Gamma waves. (Brainwaves)

In which electromagnetic spectrum category are they under?

Thanks!

2007-12-30 02:36:13 · 1 answers · asked by Anonymous in Physics

or a mining operation some time in the future?

2007-12-30 02:34:07 · 6 answers · asked by Anonymous in Astronomy & Space

any concept,photo,veido on it,plz send.

2007-12-30 02:33:17 · 8 answers · asked by ray_varun 1 in Physics

2007-12-30 02:33:07 · 7 answers · asked by ? 2 in Physics

The full scope of our reality.
Checkout this link and the THE CALCULUS OF DISTINCTIONS.
http://www.transcendentalphysics.com/

2007-12-30 02:31:13 · 2 answers · asked by Anonymous in Physics

The famous E=mc2 equation seems to suggest that every atom contains great energy, not only atoms of elements that are highly radioactive and thus dangerous to handle. What barriers prevent us from using "safe" elements like iron to generate nuclear energy?

2007-12-30 02:28:05 · 7 answers · asked by Perpetua 2 in Physics

The answer is 4.2... I just dont' know how to get there from the question.

2007-12-30 02:26:53 · 18 answers · asked by Anonymous in Mathematics

We have all seen those "shake flashlights" and the "Hand crank radios."

If I want to build a motor to generate electrical energy, how would I do that. Maybe there is some science store that sells a kit.


Also, assume you have this motor, which when you exert mechanical energy, converts it into electrical, how would you store the said converted energy.

Thank You!

2007-12-30 02:26:22 · 8 answers · asked by J 1 in Engineering

2007-12-30 02:23:27 · 6 answers · asked by Anonymous in Astronomy & Space