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Science & Mathematics - 6 November 2007

[Selected]: All categories Science & Mathematics

Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology

a. dawes act

b. national grange

c. farmer's alliance

d. homestead act

2007-11-06 07:24:19 · 2 answers · asked by Irina L 1 in Geography

I need to know the definition of a strato volcano

2007-11-06 07:23:26 · 5 answers · asked by ~kArIn***!<3 1 in Earth Sciences & Geology

im watching a cary grant movie called "topper" and in a bar there is a wireless device that controls the music.

which makes me wonder, if Hollywood took time to put the idea in the movie, in the 1930's, and the twilight zone began having these special devices doing similiar things, albeit in a total fictional sense, how close are we to having satelites that function like the ones in dejavu movie. ?

2007-11-06 07:21:59 · 4 answers · asked by Priestcalling 3 in Astronomy & Space

2007-11-06 07:21:49 · 14 answers · asked by Samantha B 1 in Mathematics

I have searche deverywhere and i am not capleble of finding these answers, this is for a friend of mine and he is trying to bring up his grade in our ag class and of course he is a freshman thanks also its for the FFA

2007-11-06 07:20:43 · 5 answers · asked by Anonymous in Agriculture

If frictional forces do −1.01×104 of work on her as she descends, how fast is she going at the bottom of the slope?
Take free fall acceleration to be = 9.80 .
Now moving horizontally, the skier crosses a patch of soft snow, where the coefficient of friction is = 0.250. If the patch is of width 70.0 and the average force of air resistance on the skier is 180 , how fast is she going after crossing the patch?

After crossing the patch of soft snow, the skier hits a snowdrift and penetrates a distance 2.30 into it before coming to a stop. What is the average force exerted on her by the snowdrift as it stops her?

2007-11-06 07:20:12 · 1 answers · asked by elturi2k@sbcglobal.net 1 in Physics

Suppose X is an exponential random variable with parameter p and c>0. Prove that cX is exponential with parameter p/c.

2007-11-06 07:18:50 · 2 answers · asked by cornzxo1 1 in Mathematics

What is the minimum value of (in terms of ) such that the car moves around the loop without falling off at the top (point )?

If the car starts at height = 63.0 and the radius is = 21.0 , compute the speed of the passengers when the car is at point , which is at the end of a horizontal diameter.
Take the free fall acceleration to be = 9.80 .

If the car starts at height = 63.0 and the radius is = 21.0 , compute the radial acceleration of the passengers when the car is at point , which is at the end of a horizontal diameter.
Take the free fall acceleration to be = 9.80 .

If the car starts at height = 63.0 and the radius is = 21.0 , compute the tangential acceleration of the passengers when the car is at point , which is at the end of a horizontal diameter.
Take the free fall acceleration to be = 9.80 .

2007-11-06 07:17:55 · 1 answers · asked by elturi2k@sbcglobal.net 1 in Physics

Please list them....it is important that i know today!

2007-11-06 07:14:53 · 5 answers · asked by firdause 1 in Mathematics

a 95.0 kg person stands on a scale in an elevator. what is the apparent weight when the elevator is accelerating upward with an acceleration os 1.80 m/s^2?
I dont want the answer just some direction, i have tried a few different methods and none of them work out.

2007-11-06 07:13:59 · 2 answers · asked by Anonymous in Physics

help me figure out the answer

2007-11-06 07:05:45 · 4 answers · asked by looking 4 loove =] 3 in Mathematics

2

What is the deal? These things are everywhere! You cannot even go outside with one flying and landing on you! Where did they come from? I have never seen so many in my entire life! They are covering everything!

2007-11-06 07:05:05 · 6 answers · asked by Anonymous in Zoology

Like, when you play Ocarina of Time, and hit the chickens enough times, they attack you and cause a LOT of damage! I would bnever do such a thing,. but are they physically resistant?

2007-11-06 07:03:26 · 5 answers · asked by Anonymous in Physics

The TOTAL number including squares bigger than 1x1 -- the answer is not 100

2007-11-06 07:00:49 · 3 answers · asked by A A 3 in Mathematics

Howcan we fly anywhere as, with the earth spinning we would go backwards.

2007-11-06 07:00:24 · 10 answers · asked by Anonymous in Astronomy & Space

i looked at a map and was trying to figure it out but im kinda slow and have no idea. anybody wanna help me! ..ill throw in some left over halloween candy!! =]

2007-11-06 06:58:46 · 7 answers · asked by prunkibabe619 2 in Geography

When I'm walking to the shops I go down an alleyway approximately fifteen feet wide with no overhanging structures and no vegetation or trees within sight- just two featureless wooden fences either side and concrete on the ground.

I always walk through a strand of spider web; assuming the spider isn't some sort of eight-legged Evel Knevel, with a very small motorcycle to make the jump, how are they able to get their webs to do this?

2007-11-06 06:55:35 · 20 answers · asked by Anonymous in Zoology

in particular reference to hepatitis c. how does the bloody thing work

2007-11-06 06:55:13 · 2 answers · asked by Anonymous in Medicine

1- a solution containing a conjugate base
2- a solution that resists pH change
3- a solution with pH=7
4- a solution containing a weak acid

2007-11-06 06:53:44 · 2 answers · asked by palomita0281 1 in Chemistry

A 50 kg kid stands at the rim of a merry-go-round of radius 2.0 m, rotating with an angular speed of 3.00 rad/s.
1) what is the kid's centripetal accel?
2) what is the minimum force between his feet and the floor of the carousel that is required to keep him in the circular path?
3) what minimum coefficient of static friction is required? will the kid stay on the merry-go-round?

2007-11-06 06:52:44 · 1 answers · asked by Captain Whiskerboy Litterbox 3 in Physics

Gaseous HCl is evolved from a conc HCl solution (an acid) and ammonia is a gas ( a base).
What is the chemical formula of the "fumes" that form in the ammonia test? Write a balanced equation for the reaction.
thanks

2007-11-06 06:51:30 · 2 answers · asked by bocabrunette714 1 in Chemistry

What is the equillibrium equation when you add HCL to cobalt chloride solution CoCl4 2-? Is this and exothermic or endothermic reaction?

2007-11-06 06:50:47 · 2 answers · asked by kaj 1 in Chemistry

the answer shows (p - 30)2 = 0 (the two is supposed to be mean squared)

but i don't understand how to get to that point

2007-11-06 06:50:41 · 4 answers · asked by Anonymous in Mathematics

I mean, i love the legend of Zelda and all, but how hard would that small boy have to swing that tiny sword to kill those octopuses? Could he do it?

2007-11-06 06:50:07 · 19 answers · asked by Anonymous in Physics

to treat a spillage from a car battery,y does putting water then washing soda(sodium carbonate)on it work?
please help!

2007-11-06 06:48:48 · 2 answers · asked by Anonymous in Chemistry

If someone could help me with this one, I'm almost entirely lost as to what methods will work for this....

Prove for every positive integer n: 3 divides evenly into n^3 - n

I.e. 3 will divide evenly into n^3 - n with no remainder left.

My prof seemed to recommend induction, but I don't see how to do that here...and then I tried to do it by cases, but the first case i tried (when n is odd) won't seem to do me any good (it reduces to 8k^2(k+2)+2 ....how can i prove that's divisible by 3??)

Thanks in any case, I need the help!!

2007-11-06 06:47:19 · 4 answers · asked by netsurfer733 2 in Mathematics

if water i pumped out of a 20m well by a pump that can produce a power of 3 KW, how many litres of water can be lifted per second (one litre of water weighs 10 N)

please help!

2007-11-06 06:45:46 · 1 answers · asked by Anonymous in Engineering

1) Iron II oxide + carbon monoxide ----> Iron + carbon dioxide

2) Calcium oxide+ diphosphorous pentoxide ----> calcium phosphate

3) Magnesium chloride + silver nitrate ----> magnesium nitrate + silver chloride

2007-11-06 06:44:40 · 3 answers · asked by Caramel 2 in Chemistry

Determine whether the sequence {a(n)} converges or not when
a(n)= 1 * 4 * 9.... (5n-1) / ((5n)^n)

i know it converges and has a limit of 0 but i dont know the explanation for this...

2007-11-06 06:44:30 · 3 answers · asked by ruby 2 in Mathematics

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