Science & Mathematics - 18 August 2006

1) show that the remainder when 30^99+61^100 is divided by 31 is 0.
2)find the remainder when the sum 1^2 +2^2...+100^2 is divieded by 4.

3) Show that 8|5^2n +7

4) Among the rules of divisibility. Perhaps the most famous one is the "casting-out 9s"rule. A natrual number n is vidisible by 9 if and only if sum of its digits is divisible by 9. Prove it.

2006-08-18 22:12:27 · 9 answers · asked by edwinvandesar 1 in Mathematics

2006-08-18 22:11:26 · 6 answers · asked by Namila 1 in Astronomy & Space

2006-08-18 22:10:00 · 3 answers · asked by shardf 5 in Physics

I have always been fascinated by earthquakes but this has always confused me. Los Angeles lies atop an entire network of smaller (yet powerful) faults while San Francisco has fewer (yet much larger) faults. Which of the two cities experiences quakes more frequently (for those of you who live and or work in either one of the cities)?

2006-08-18 22:09:57 · 5 answers · asked by chinoszone 1 in Earth Sciences & Geology

2006-08-18 22:08:12 · 3 answers · asked by THOMAS B 1 in Biology

2006-08-18 22:01:53 · 1 answers · asked by Anonymous in Biology

Why does't it have a flat shape instead?

2006-08-18 21:57:22 · 13 answers · asked by CrazyVan 2 in Astronomy & Space

2006-08-18 21:51:16 · 14 answers · asked by siddarth k 1 in Physics

2006-08-18 21:48:23 · 7 answers · asked by Siby K 2 in Other - Science

As far as I can tell, gravitons are unbounded to branes, so suppose two p-branes came within a very small distance of eachother. Would the gravity of a massive body in the first p-brane be capable of affecting a massive body within the other p-brane?

2006-08-18 21:47:08 · 2 answers · asked by frostwizrd 2 in Physics

2006-08-18 21:43:46 · 3 answers · asked by Anonymous in Engineering

our solar system - research

2006-08-18 21:36:10 · 12 answers · asked by siddarth k 1 in Astronomy & Space

2006-08-18 21:35:54 · 6 answers · asked by e_llis 1 in Geography

Thanks...tom science

2006-08-18 21:33:25 · 5 answers · asked by tom science 4 in Earth Sciences & Geology

Along the West Coast, the Mexican border, the Gulf Coast, the East Coast and the Canadian border..

2006-08-18 21:32:11 · 5 answers · asked by BrianL 6 in Geography

I am a Geography and Geology student and I would like to come up with a good senior thesis which would prepare me for the phd program in the Geology Dept. I am interested in Geomorphology, Human Ecology, Mass Movements, Tectonics and Geographic Information Science. I am particularly interested in the Kashmir region or anywhere along the base of the Himilayas on the India/ South side. Any ideas?

2006-08-18 21:32:05 · 1 answers · asked by Anonymous in Earth Sciences & Geology

2006-08-18 21:28:38 · 11 answers · asked by vinny_the_hack 5 in Physics

it was asked to me by my friend and so i need answers

2006-08-18 21:26:31 · 19 answers · asked by Anonymous in Mathematics

2006-08-18 21:22:08 · 2 answers · asked by aida g 1 in Biology

2006-08-18 21:21:06 · 3 answers · asked by aida g 1 in Biology

give at list 200 tip with its explanation related with the concepts in physics....tanx hope to recieve the answer on monday....

2006-08-18 21:11:53 · 3 answers · asked by gelic_eye 1 in Physics

What exactly dim stars are?And what makes the hydrogen-burning low to make them deem?
And how long will they live?

2006-08-18 21:11:38 · 7 answers · asked by negin_e91 1 in Astronomy & Space

You know, the one that knocks the other etc. and then which send the force back to knock the first one again and then which continues on forever etc.

2006-08-18 21:08:38 · 6 answers · asked by Ickey J 1 in Physics

My theory is higher global temperatures will create higher insect and bacteria growth, which will result in faster spread of disease. Meaning wide spread plague.

2006-08-18 21:08:23 · 10 answers · asked by sirheathen 2 in Biology

Xena is good name

2006-08-18 21:05:22 · 9 answers · asked by Anonymous in Astronomy & Space

I need all the solution :)

2006-08-18 21:01:08 · 8 answers · asked by Anonymous in Mathematics

What I mean to say is, if 2 ,e.g., balls are attached to the end of a string which is,e.g. around one's finger or around a pole etc. and they are released to knock against each other then why don't they continue knocking each other forever? Where does the force which allowed therm to knock each other disappear to?

2006-08-18 21:00:46 · 11 answers · asked by Ickey J 1 in Physics

2006-08-18 20:42:15 · 18 answers · asked by Anonymous in Mathematics

2006-08-18 20:40:45 · 7 answers · asked by Anonymous in Mathematics

2006-08-18 20:39:45 · 1 answers · asked by shah r 1 in Engineering