Science & Mathematics - 28 September 2007

2007-09-28 16:33:24 · 7 answers · asked by kntagler 1 in Physics

2007-09-28 16:29:59 · 2 answers · asked by kntagler 1 in Physics

His birthday is near. Does anyone know of any off the wall websites that have tractor novelites? I found countrystorecatalog.com and got a couple things. I looked on Ebay and also googled Farmall and International Harvester. I am looking for something really different. Do you have a favorite I can check out?

2007-09-28 16:28:58 · 6 answers · asked by B. 7 in Agriculture

2007-09-28 16:23:11 · 13 answers · asked by Giggle Bear 3 in Astronomy & Space

2007-09-28 16:18:12 · 9 answers · asked by Anonymous in Astronomy & Space

2007-09-28 16:15:55 · 9 answers · asked by Marica F 1 in Biology

ood. Is that crazy or what?

2007-09-28 16:12:31 · 5 answers · asked by Anonymous in Medicine

i recently heard of iridology. got a pic of my eyes and they told me what some things were in my body. they gave me some all natural pills to take morning and night and they told me to change my diet. i have been taking the pills and they do seem to help. BUT i've been wondering if the Iridology is actaully for real or just something some guy made up. i work @ a vet clinic and i told the docs that this is what im doing. the next day one of the docs gave me a paper that said iridology is a quack. it was from a .org website not a .com. so do you know if Iridology actaully works?

2007-09-28 16:11:34 · 11 answers · asked by ○HiD○ 4 in Medicine

does a scatter plot have outliners? or is it a box and whisker plot that has outliners?

2007-09-28 16:10:03 · 2 answers · asked by lil_angel_ztar 2 in Mathematics

How do you figure this out?? What is it?

2007-09-28 16:02:44 · 5 answers · asked by Anonymous in Other - Science

Solve. 10x 2 + 20 x + 1 = 0

x = (smaller value)

x = (larger value)

2007-09-28 16:01:57 · 5 answers · asked by M M 1 in Mathematics

Solve. 3t^ 2 + 18^t + 3 = 0

t = (smaller value)

t = (larger value)

2007-09-28 15:59:17 · 6 answers · asked by M M 1 in Mathematics

Does sound really choose the path which requires the least time, like light?

2007-09-28 15:59:07 · 1 answers · asked by Frances 2 in Physics

even if it is graphite or some other type, is it poisonous if you get it injected into your bloodstream? I wanna know, i'm only 11 and i'm curious

2007-09-28 15:51:36 · 23 answers · asked by Anonymous in Earth Sciences & Geology

well i dont remeber when,but i remeber reading this article about the mayan calender.The article said that the claender would end around the year 2009.now its said that the mayans could supposobly tell the future b/c they predicted events such as 9/11 well n e ways if its gonna end in 2009...does that mean somthing catastrophic will happen enough 2 stop the earth or sumthing?(p.s i might sound smart but im not that smart so dont expect another question as well written as this 1 lol !!!)

2007-09-28 15:48:02 · 10 answers · asked by I Eat Broken Crayons 1 in Astronomy & Space

Find an equation for the line tangent to f(x) = 7 x e^x ? ?
Here is question:

Find an equation for the line tangent to the graph of

f(x) = 7 x e^x

at the point (a,f(a)) for a=1.

the answer is:
y =


I do not know how to do this, any help would be great, I keep getting 19.028 and 38.0559 but that is no help it seems

thank you so much!

2007-09-28 15:39:12 · 6 answers · asked by Jon-O 1 in Mathematics

2007-09-28 15:37:53 · 3 answers · asked by Nick 2 in Physics

They say that the ocean reflects the sky, but i don't really think that's true because when you're on a plane you could see that certain parts of the ocean is green and some is blue.

2007-09-28 15:36:32 · 20 answers · asked by Baby S 1 in Earth Sciences & Geology

So, we know the sun cant create a black hole. But wut if it did?
Give me some imagination here

2007-09-28 15:32:48 · 21 answers · asked by Formerly Known as 30stm 5 in Astronomy & Space

of this sequence are:

1, 0, 0, 1, 0, 0, 0, 0, 1, 0

2007-09-28 15:27:51 · 1 answers · asked by Joe 1 in Mathematics

Organotin compounds play a significant role in diverse industrial applications. They have been used as plastic stabilizers and as pesticides or fungicides.
One method used to prepare simple tetraalkylstannanes is the controlled direct reaction of liquid tin(IV) chloride with highly reactive trialkylaluminum compounds, such as liquid triethylaluminum (Al(C2H5)3).
3SnCl4 + 4Al(C2H5)3 3Sn(C2H5)4 + 4AlCl3

In one experiment, 0.160 L of SnCl4 (d = 2.226 g/mL) was treated with 0.349 L of triethylaluminum (Al(C2H5)3); d = 0.835 g/mL).
What is the theoretical yield in this experiment (mass of tetraethylstannane, Sn(C2H5)4)?

ANS:

If 0.175 L of tetraethylstannane (d = 1.187 g/mL) were actually isolated in this experiment, what was the percent yield?

ANS:

2007-09-28 15:27:23 · 1 answers · asked by Discover.... 1 in Chemistry

any item
Item,
What is item made of?
What are at least two resources used to make the item? Name at least one country that produces each resource Give two negative impacts of production of the item.

2007-09-28 15:26:35 · 2 answers · asked by kyle p 1 in Agriculture

55+x+105= 180

2007-09-28 15:24:43 · 13 answers · asked by Anonymous in Mathematics

An elevator with a weight of 27.9 kN is given an upward acceleration of 1.68 m/s2 by a cable.

(a) Calculate the tension in the cable.
_________ N
(b) What is the tension when the elevator is decelerating at the rate of 1.68 m/s2 but is still moving upward?
____________N

Can anyone help me start and help me work through this? I am just having trouble with it in general.

2007-09-28 15:17:48 · 2 answers · asked by eggyu74 3 in Physics

2007-09-28 15:15:50 · 5 answers · asked by Anonymous in Mathematics

With the increased levels of fresh water dumped into the oceans, the increased number of people driving automobile, over population and over consumption, can the theories exhibit in the movie be reality today. Sure it's nice to burn books to survive that killer storm but is it possible for that to happen in our lifetime?

2007-09-28 15:10:58 · 9 answers · asked by Coin 4 in Other - Science

2007-09-28 15:06:48 · 11 answers · asked by jacks_insanity 3 in Physics

1.Which instrument would be more accurate for measuring the volume of a liquid- a beaker or a graduated cylinder?why?

2.Volume can be measured in units of cubic meters or milliters. when would you use cubic meters?Whe would you use milliters?

3.Is a precise measurement always accurate?explain please

2007-09-28 15:04:53 · 1 answers · asked by Anonymous in Chemistry

can someone give me a logical answer. with supporting reasoning.

2007-09-28 15:03:41 · 11 answers · asked by mouli_engg 2 in Biology

2007-09-28 15:03:34 · 2 answers · asked by fhm20us 1 in Engineering