Science & Mathematics - 1 November 2007

2007-11-01 13:02:22 · 1 answers · asked by Terri L 2 in Biology

2007-11-01 13:00:05 · 2 answers · asked by Anonymous in Weather

Find f(2) given f(x) = 2x^3 - x^2 - 22

[a] 30
[b] -42
[c] - 10
[d] -14

please show me how to do it
thanks :)

2007-11-01 12:59:58 · 5 answers · asked by vennysweetgirl21 3 in Mathematics

2007-11-01 12:59:25 · 5 answers · asked by bep 2 in Weather

Find the area of the square not covered by the circle to the nearest tenth

2007-11-01 12:58:40 · 1 answers · asked by Anna 1 in Physics

An underwater swimmer observes that a beam of sunlight in the water makes an angle of 17.7° with the vertical. The index of refraction for water is equal to 1.33. Assuming the surface of the water is level, determine the beam's angle as it enters the water.

2007-11-01 12:58:01 · 1 answers · asked by Kelly 1 in Physics

An elephant and mouse would both have zero weight in gravity-free space. if they were moving toward you with the same speed, would they bump into you wiht the same effect? Explain.

It tried looking in the book for help but didnt understand.

2007-11-01 12:57:30 · 3 answers · asked by Catherine 2 in Physics

what i mean is like...is it a simple machine...like 1,2,3 class levers

2007-11-01 12:57:19 · 2 answers · asked by Margie J 1 in Other - Science

Should divers be allowed near coral reefs? Why?

Please explain in article form.

Most detailed answer gets best answer.

2007-11-01 12:56:48 · 4 answers · asked by JB 1 in Biology

what do i do i have a problem like this:
\5/-32
(the 5 isn't outside the square root sign)

the \ / is the square root sign.
and i read somewhere you have to use i, but she doesn't want us to. so is the answer just -2?

2007-11-01 12:54:52 · 4 answers · asked by kim 2 in Mathematics

cot x = -3, and "x" is in Quadrant 2. How do I solve for cos (x/2)?

2007-11-01 12:52:56 · 3 answers · asked by Muffins 1 in Mathematics

What is larger when its smaller and smaller when its larger??? HELP! I need extra credit!!!!

2007-11-01 12:52:00 · 3 answers · asked by gymgirl 1 in Mathematics

My son wants to do his science fair project on different municipalities and their quality of water. We are trying to get information about the water supply and distribution system for northeast Illinois. I've read that over 100 suburbs get their water from the Chicago system, but I can't find a list or a map (there may be homeland security concerns with posting this information on-line). Do you know where this information is on-line (we are interested in and working on off-line sources as well)?

2007-11-01 12:49:40 · 1 answers · asked by peteckart 1 in Geography

Harvard University are developing one with a wingspan of 3cm, doesn't power itself as yet but flies.

2007-11-01 12:49:31 · 6 answers · asked by Chris cc 1 in Engineering

2007-11-01 12:48:52 · 7 answers · asked by Anonymous in Other - Science

Find the equation of the sphere with center (2,-1,-3) and satisfying the given condition:
a) Tangent to the xy-plane
b) Tangent to the xz-plane
c) Tangent to the yz-plane

2007-11-01 12:44:32 · 1 answers · asked by Anonymous in Mathematics

I called the pharmacist about taking piroxicam & feeling dizzy, with major headache and stiff neck. He said to go ahead & switch to ibuprophen which I did. One hour later my hands are red, sweaty & swollen! I called back & they said I must be allergic to the piroxicam & have some left in my system? And to just wait it out. That it takes between 4 to 6 hours before it's out of my system. So it's been 2 hours and I feel strange... what should I do? any advice please??

2007-11-01 12:43:18 · 10 answers · asked by bbooey2003 1 in Medicine

The equilibrium constant K for the reaction C (s) + CO_2(g) <--> 2CO (g) is 1.9 at 1000 K and 0.133 at 298 K.

1. If excess C is allowed to react with 21.0 g of CO_2 in a 3.00-L flask, how many grams of CO are produced at 298 K? At 1000k?

2. What are the partial pressures of each gas at 298 K? At 1000k?

3. Would you expect K to increase or decrease if the pressure were increased at constant temperature and volume?

2007-11-01 12:42:25 · 2 answers · asked by Forest green 2 in Chemistry

a 2.0-g particle moving at 8.0 m/s makes a perfectly elastic head-on collision with a restiing 1.0 -g object. find the speed of each particle after the collision and find the stationary speed of each particle after the collision if the stationary particle has a mass of 10g.

2007-11-01 12:40:04 · 1 answers · asked by confusedkid 3 in Physics

how many grams is 160 milligrams?

2007-11-01 12:36:19 · 7 answers · asked by Haley 3 in Mathematics

ok here's the question..and i cant find the answer!

Why did most scientist of Alfred Wegener's time reject the theory on continental drift?

please be simple..dont give me a whole lot of info that i dont need..i just need the answer plz!

THANK YOU!
and
Happy November first!

;]

2007-11-01 12:35:57 · 3 answers · asked by Vanilla Pepsi 3 in Earth Sciences & Geology

2007-11-01 12:35:27 · 1 answers · asked by leo 1 in Mathematics

In a zoo one of the information plaques said that the South Pole is "twice as cold" as the North Pole. What exactly is "twice as cold"?

Does it mean half as hot, so that the temperature in Kelvin is half? Does it mean twice as far away from some arbitrary temperature that defines where cold begins?

From what I've found, the temperature around the North Pole seems to average about 1 F / -17 C / 256 K while at the South Pole it averages -63 F / -53 C / 220 K.

2007-11-01 12:35:02 · 4 answers · asked by Amy W 6 in Weather

A string is attached to three masses 4kg, 1kg and 6kg and the acceleration of gravity is 9.8m/s^2. A pulley has no mass and no friction and the string has no mass. The distance between the 1kg and 4kg is 2m and the string is 24cm long. The tension T1 is between the 4kg and 1kg, and the tension T2 is between 2kg and the pulley, both masses are on the left side and T3 is on the right side with 6kg. The 4kg is below the 1kg on the left side. I need to find the tension between the block with mass of 4kg and 1kg on the left hand side of the pulley and the answer has to be in units of N. Could someone explain how I can answer this.

2007-11-01 12:33:50 · 4 answers · asked by kira 2 in Physics

2007-11-01 12:32:32 · 2 answers · asked by toodledoo4367 1 in Mathematics

WHAT ARE SOME BRANDS FOR IT? AND UMM IF POSSIBLE ANY LINKS FOR INFORMATION! THANKS ILY<333!

2007-11-01 12:30:16 · 1 answers · asked by maria f 2 in Chemistry

ok so were working on "factoring expressions" ..we just started this and i already forgot how to do it..can someone help remind me lol like for ex. one of the problems i have to do is 10x+40 we have to factor it..

2007-11-01 12:29:27 · 7 answers · asked by Lexi L 1 in Mathematics

What is ...
-1/3+4/5 - 8/15

And how do you solve it?

2007-11-01 12:28:25 · 5 answers · asked by Sierra K 2 in Mathematics

2007-11-01 12:27:35 · 2 answers · asked by Anonymous in Chemistry

the sum of two integers is greater than 12. One integer is 10 less than twice the other. What are the least values of the integers?

Show steps!!1 Also do u need a let statement??

2007-11-01 12:26:11 · 2 answers · asked by Anonymous in Mathematics