Science & Mathematics - 20 October 2007

found on both Mars and Venus. What type of eruptions would be most common on these planets?
a. Very violent eruptions on both planets
b. Very gentle eruptions on both planets
c. Violent eruptions on Venus and gentle eruptions on Mars
d. Gentle eruptions on Venus and violent eruptions on Mars

2007-10-20 05:41:47 · 3 answers · asked by investing1987 3 in Earth Sciences & Geology

Prove that (k!)^n divides (kn)! for all k and n where both k and n are natural numbers. (kn is the product of k and n)

Here are we supposed to fix either k or n and then use induction on the other? How to handle this question?

2007-10-20 05:38:38 · 2 answers · asked by Anonymous in Mathematics

2007-10-20 05:36:39 · 9 answers · asked by Red 2 in Chemistry

What is circular motion and centripetal force? What causes them to have this motion?

2007-10-20 05:36:28 · 3 answers · asked by Anonymous in Physics

Find the curves where the part of the tangent line cut off by the coordiante axes is bisected by the point of tangency.

2007-10-20 05:30:46 · 5 answers · asked by tangoprince 1 in Mathematics

2007-10-20 05:29:26 · 24 answers · asked by Anonymous in Astronomy & Space

2007-10-20 05:27:32 · 4 answers · asked by TTU fan 2 in Engineering

If you do the right reaction can you turn other metals into gold? Can you do this to other metals?

EX. We did a lab with hydrochloric acid and turned a penny gold. You heat up the acid and drop in the penny and let it turn silver then pull it out cool it and put it in heat it will turn to gold.

2007-10-20 05:26:07 · 8 answers · asked by Anonymous in Chemistry

how woould i balance such equation?

2007-10-20 05:23:30 · 3 answers · asked by leoncita 2 in Chemistry

a. mid-ocean rifts
b. rift valleys
c. the ring of fire
d. the Appalachian Mountains
e. Earth's magnetic field

2007-10-20 05:22:49 · 8 answers · asked by investing1987 3 in Earth Sciences & Geology

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Jazz%20307%20quiz/Picture8.png

2007-10-20 05:20:58 · 7 answers · asked by Anonymous in Mathematics

2007-10-20 05:19:03 · 9 answers · asked by Anonymous in Earth Sciences & Geology

if you press a book flat against a vertical wll with your hand, in what direction ist he friction exerted by the wall on the book?
a)downward
b)upward
c)out from the wall
d)into the wall
is it d into the wall?

2007-10-20 05:18:33 · 6 answers · asked by ? 2 in Physics

Is this reactio possible?
I + IO3 -----> I3
Iodide + Iodide trioxide ----> iodide (III)

Also, how wold i balance it?

2007-10-20 05:18:27 · 6 answers · asked by leoncita 2 in Chemistry

2007-10-20 05:16:15 · 2 answers · asked by damigurl05 1 in Botany

Please use simple terms, I am not a chemistry-minded person.

2007-10-20 05:15:11 · 1 answers · asked by Anonymous in Chemistry

Assuming my plot of land is a perfect square, I envision a pyramid shape down to the core, which would be a single point (the tip of the pyramid). Do I own this entire area?

2007-10-20 05:14:37 · 7 answers · asked by Craig S 1 in Geography

2007-10-20 05:12:21 · 3 answers · asked by Mohdfarook T 1 in Earth Sciences & Geology

I am doing a report on animal behaviour and I'm having trouble thinking of a good conclusion. It has to besomething which somes up the whole proccess of the development of behaviour in animals.
Like:
"Let us look at the picture fully. By studying each aspect of the development of animals, we can see that although genetics and evolution have an immence effect on the behaviour of animals, there are many other factors which influence the overal development and behaviour of individuals and species.
As a procces, it is fair to say that genes create the animal, and evolution creates the arrangement of genes. This decides the animals physical chracteristics, as well as its innate behaviours and tendancies. Through play, the animal then learns about the environment in which it lives, as well as learning both practical and social skills.
The way these things are learned are varied."

But better.

2007-10-20 05:12:09 · 3 answers · asked by Smiler 3 in Zoology

A 1.80m tall basketball player attempts to make a shot 13.40m from the basket ( the basket is 3.05m high). The accleration of gravity is 9.81 m/s2. If he shoots the ball at a 48 degree angle, what intial speed must he throw the basketball so that it goes through the hoop without striking the backboard. Answer in m/s.

2007-10-20 05:11:42 · 1 answers · asked by akanthasy 1 in Physics

2007-10-20 05:10:59 · 9 answers · asked by Anonymous in Earth Sciences & Geology

Well, I am only 15 years old, but college isn't that far away.

I have been researching on marine biology, and have decided i would like to work with endangered penguins.
But how exactly would you get in that field??
What colleges have that?
thanks everyine and i would appreciate some comment! =]
buh-bye

2007-10-20 05:08:43 · 4 answers · asked by Anonymous in Zoology

What GCSE grades, A-level grades, degrees etc. do i need???

Thanks

2007-10-20 05:04:14 · 2 answers · asked by Joseph W 2 in Weather

please help i need this...

in terms of theta i need to find the angle that gives me the maximum volume of the cone.
Please without using calculus concepts

you can see the illustration "picture" at
http://img265.imageshack.us/my.php?image=project3yn4.png

"how much of of an angle should i cut of to get the maximum volume of the cone"

2007-10-20 05:03:10 · 1 answers · asked by The Answer 3 in Mathematics

2007-10-20 05:01:56 · 8 answers · asked by Mojo Ryzin 5 in Physics

My girlfriend and I love the small creatures that make our life of comfort possible. What would we do without bees? If they ceased to exist, fruits and vegetables would be very expensive for lack of effective pollinators.

Two years ago our garden was a “buzz” with bees, hummingbirds, and such. Last year there was hardly a bee around. Well, maybe dead ones floating in my swimming pool.

Needless to say, our vegetables did poorly, for lack of pollination.

My girlfriend pointed out that our garden is once again full of bees. The gentle hum of hundreds, of bees can be heard from our front patio once again!

Does this mean they are back for good? Did we help in some small way, by adding flowering plants to our low water usage landscape?

2007-10-20 04:59:58 · 4 answers · asked by Marvin 7 in Zoology

The number of yeast cells in a laboratory culture increases rapidly at first but levels off eventually. The population is modeled by the function below, where t is measured in hours. At time t = 0 the population is 20 cells and is increasing at a rate of 14 cells/hour.
n = f(t) = a/(1+be^(-0.8 t))
(a) Find the values of a and b.
a =
b =

(b) According to this model, in the long run the yeast population stabilizes at ? cells

Suppose that a population of bacteria triples every hour and starts with 300 bacteria.
(a) Find an expression for the number n of bacteria after t hours.
n(t) =

(b) Estimate the rate of growth of the bacteria population after 2.5 hours.
n'(2.5) =

2007-10-20 04:56:52 · 1 answers · asked by Anonymous in Mathematics

suppose that order of a = 24 ..find a generator for intersect .... pleas explain well to me because i do not understand this topic well

2007-10-20 04:54:11 · 1 answers · asked by Dana S 1 in Mathematics

2007-10-20 04:53:47 · 3 answers · asked by andromeda 2 in Mathematics

x^3-6x^2+13x-10
Please show details on factoring
(I am supposed to use synthetic division)

2007-10-20 04:49:39 · 4 answers · asked by Sam Dali 2 in Mathematics