Science & Mathematics - 17 January 2007

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Can you help me explain how the mass and the atomic numbers of an alpha particle can be used to determine the number of neutrons in the particle by using this table?

2007-01-17 05:49:15 · 3 answers · asked by James 1 in Chemistry

A boat sails from r1=7i+6j direct to r2=5i+4j with a speed of 28.28 m/s. A second boat observes the first boats velocity as V=4(i-3j). determine the velocity and speed of the second boat

2007-01-17 05:47:16 · 3 answers · asked by Samuel_007 2 in Mathematics

Melanie told a secret to 3 friends. In one hour each friend told 3 people.In 2 hours those 3 told 3 more . How many people knew in 5 hours?

2007-01-17 05:46:30 · 8 answers · asked by Keke 3 in Mathematics

Personally, im not really FOR the whole CLONING humans thing

but im curious? i heard that only woman can be cloned TRUE?

2007-01-17 05:44:53 · 3 answers · asked by Olivia L 2 in Other - Science

2007-01-17 05:44:31 · 2 answers · asked by Anonymous in Medicine

I took Introduction to Algebra already and would like to take pre calc and intro to trig this semester

2007-01-17 05:43:57 · 1 answers · asked by melissa13182 3 in Mathematics

2007-01-17 05:43:38 · 30 answers · asked by GUESS GIRL 3 in Weather

evolution or God's creation, your take?

2007-01-17 05:43:18 · 10 answers · asked by Nando 3 in Biology

Well, if we haven't got a supersonic airliner now and one isn't on the drawing board, how come it was supposedly developed in the 1960's. How come we can't do it now?

(That is one of the lame reason's people have for supporting the notion that the moon landings were not real, so by the same token Concorde was a hoax. It never flew at twice the speed of sound. It couldn't have done, because we can't build a supersonic airliner now)

2007-01-17 05:42:38 · 4 answers · asked by nick s 6 in Astronomy & Space

2007-01-17 05:41:55 · 4 answers · asked by david w 1 in Biology

2007-01-17 05:41:51 · 14 answers · asked by Joe H 1 in Biology

i thought, i using my brain completly, but still i am fails, not reaching my goal, not analysing properly

2007-01-17 05:41:16 · 7 answers · asked by babu p 1 in Biology

I have some school work due in on it in which a few questions need to be answered.

How are embryos used for reasearch?

Why is this controversial?

How are they treated after experimentation?

And the pros and cons of stem cell research?

2007-01-17 05:38:51 · 7 answers · asked by matt151091 2 in Medicine

i mean why can ya smell wats cookin.... ya know like wat does the food or watever do to the air ta make it smell?? or am i totally messed up??lol

2007-01-17 05:38:25 · 5 answers · asked by akvarn1 3 in Chemistry

2007-01-17 05:38:18 · 9 answers · asked by prettyqbee07 1 in Weather

Normally, the actual yield in a chemical reaction will be equal to or less than the theoretical yield.

2007-01-17 05:35:53 · 5 answers · asked by Anonymous in Chemistry

What's the actual date?

2007-01-17 05:34:31 · 12 answers · asked by Nothing's Forever 2 in Astronomy & Space

2007-01-17 05:34:29 · 16 answers · asked by Anonymous in Earth Sciences & Geology

and what does it mean anyway? green and deep green color. i found some info in Web but the green color reeeally doesn't represent me!

2007-01-17 05:34:19 · 18 answers · asked by phoenix! 2 in Paranormal Phenomena

2007-01-17 05:32:23 · 13 answers · asked by ¢Î§¢Ø 2 in Zoology

Whats the difference how do people assume what a fruit or vegetable is?

2007-01-17 05:32:10 · 8 answers · asked by Anonymous in Botany

2007-01-17 05:31:47 · 2 answers · asked by jbowers9 1 in Mathematics

2007-01-17 05:31:21 · 13 answers · asked by Anonymous in Medicine

5 m + 2 n , n - 3 m , and 7 - 3 n

2007-01-17 05:29:47 · 7 answers · asked by Anonymous in Mathematics

courses and where to start

2007-01-17 05:29:20 · 9 answers · asked by Anonymous in Engineering

Geometry is based in part on the practice of describing objects and the _______________ between them.

2007-01-17 05:29:19 · 4 answers · asked by Rattiesrule 2 in Mathematics

(1/2) x 2 + (2/3) y 2 and (1/3) y 2 - xy + 3 x 2

a. (1/2) x 2 - xy + (1/3) y 2
or
b. (1/2) x 2 - xy + y 2
or
c. (3/2) x 2 + xy + y 2
or
d. (3 1/2 )x 2 - xy + y 2

2007-01-17 05:29:10 · 4 answers · asked by Anonymous in Mathematics

If a cheetah accelerates from rest at 7.8 m/s2 in order to reach 70 mph in a distance of 30 meters, how much time has elapsed?
2 sec
4 sec
6 sec
8 sec

2007-01-17 05:28:16 · 3 answers · asked by star wars freak 2 in Physics

2007-01-17 05:28:10 · 5 answers · asked by cshirl07 1 in Chemistry

ax + by + c , 2 ax - 3 by + c , and by - c

a. 3 ax - by + c
or
b. 3 a + x - bc
or
c. 3 ax + by - cd
or
d. bx - 3 bc + a

2007-01-17 05:27:36 · 8 answers · asked by Anonymous in Mathematics