Science & Mathematics - 8 December 2007

other than online

2007-12-08 06:22:35 · 2 answers · asked by rémy613 3 in Chemistry

when atoms of aluminum-27 are bombarded with alpha particles, a neutron and an element are produced. the particula isotope formed is

1. 31 14 Si
2. 30 14 Si
3. 31 16 S
4. 30 15 P
5. 31 15 P

2007-12-08 06:20:34 · 1 answers · asked by Shizzy D 1 in Chemistry

2007-12-08 06:18:06 · 34 answers · asked by Cheyanne S 3 in Weather

A source would be great, too.

2007-12-08 06:12:47 · 4 answers · asked by Sp. Gr. 0.98 3 in Earth Sciences & Geology

i am an indigo child are you and do u see ghosts

2007-12-08 06:06:22 · 14 answers · asked by Seattle luvr 1 in Paranormal Phenomena

need it for a project..plzzz help..im desperate

2007-12-08 06:02:34 · 3 answers · asked by animals1077 3 in Physics

This question is on a 2nd graders worksheet.

2007-12-08 05:58:01 · 9 answers · asked by Anonymous in Astronomy & Space

or have sex.

2007-12-08 05:56:30 · 9 answers · asked by its_hard_to_invent_id 1 in Astronomy & Space

This is for a 2nd grade worksheet.

2007-12-08 05:55:10 · 5 answers · asked by Anonymous in Astronomy & Space

I would like to know what percentage of the Earth's crust is made up of organic material (dead plants & animals, aka soil)?

Also, if you happen to know... what is the rate at which organic material on the Earth expands or grows deeper?

2007-12-08 05:52:32 · 4 answers · asked by TBEau 3 in Earth Sciences & Geology

2007-12-08 05:48:59 · 5 answers · asked by Lian 2 in Earth Sciences & Geology

I'm doing a cross-word puzzle for science class and one of the statements is: changed by presence of molten rock. The word is 7 letters long.

2007-12-08 05:48:55 · 3 answers · asked by espanol101 1 in Earth Sciences & Geology

A basketball court is in the shape of a rectangle. Scottie and Jamal found that the width of their court was 44 feet less than the length. If the perimeter was 288 feet, what were the length and the width of their court?

2007-12-08 05:46:42 · 5 answers · asked by jared r 1 in Mathematics

please explain

2007-12-08 05:46:35 · 5 answers · asked by asad a 1 in Zoology

2007-12-08 05:46:30 · 3 answers · asked by kaptkl 1 in Botany

I'm doing a cross-word puzzle for Science class and one of the statements is: when sea water is holding the greatest amount of a chemical. The word is 10 letters long.

2007-12-08 05:46:26 · 3 answers · asked by espanol101 1 in Earth Sciences & Geology

to move a large crate across a rough floor, you push on it with a force F at an angle of 21 degree below the horizontal. Find the force necesssary to start the crate moving, given that the mass of the crate is 32 kg and the coefficient of static friction between the crate and the floor is 0.57

2007-12-08 05:37:03 · 2 answers · asked by Anonymous in Physics

2007-12-08 05:36:43 · 7 answers · asked by StRaNgE 1 in Mathematics

lets say humans no longer had to talk.

they would lose their voice one day or another won't they?
then how long would it take for humans to only be able to croak a bit and not be able to talk properly?
hundreds of years? or thousands?

and what would be the process of humans losing their voices?
because of the genes?

2007-12-08 05:36:12 · 3 answers · asked by scoobert 2 in Biology

2007-12-08 05:34:50 · 1 answers · asked by Anonymous in Mathematics

what is the world made out of?

2007-12-08 05:32:52 · 3 answers · asked by Merrisa T 2 in Earth Sciences & Geology

2007-12-08 05:31:42 · 3 answers · asked by Mary S 1 in Weather

Consider the function (5x^9)+(5x^6)-(4x^3)-3.
Find the general antiderivative of f(x) . Enter the upper case letter C for the constant of integration.

2007-12-08 05:31:11 · 3 answers · asked by Ksyha 1 in Mathematics

An organ pipe open at both ends has a radius of 6.0cm and a length of 4.0m. If the temperature is 20C, what is the fundamental frequency of the organ pipe?

2007-12-08 05:31:00 · 2 answers · asked by limeinelcoconut 1 in Physics

Help me to find the website or information about the geography of Canada, please! Like geographical distribution, location, environment...etc. Just try your best, PLEASE~!

2007-12-08 05:27:09 · 2 answers · asked by Anonymous in Geography

please show your work briefly, thank you

2007-12-08 05:22:20 · 3 answers · asked by Anonymous in Mathematics

2007-12-08 05:20:07 · 4 answers · asked by Anonymous in Mathematics

2007-12-08 05:18:30 · 12 answers · asked by Charles M 2 in Zoology

2007-12-08 05:15:53 · 9 answers · asked by David M 1 in Mathematics

i read a math like below

in any A.P a1,a2,a3 we know 2a2=a1+a3
similarly, a1+a5=2a3 , a3+a9=2a6

can you tell, how a1+a5=2a3 and a3+a9=2a6 ?

they are quite far apart unlike consecutive a1,a2,a3

please explain

2007-12-08 05:15:41 · 1 answers · asked by sanko 1 in Mathematics