Science & Mathematics - 18 December 2007

2007-12-18 09:49:45 · 55 answers · asked by Anonymous in Astronomy & Space

i came up with several reasons such as no controversy, companies might loose money, requires energy, and the people have the right to know what they are eating and how it was made

but i need more reasons.......thanks!

2007-12-18 09:48:05 · 3 answers · asked by zestful12 4 in Biology

7 < -2p+13

2007-12-18 09:47:05 · 6 answers · asked by Anonymous in Mathematics

Why do hurricanes usually turn northeast after hitting land ?

2007-12-18 09:46:47 · 4 answers · asked by I'm not telling you! 2 in Weather

If i agree with an eye 4 an eye, do unto others as they do unto you, what goes around comes around, Is religion The Answer ?

2007-12-18 09:44:20 · 19 answers · asked by Anonymous in Paranormal Phenomena

2007-12-18 09:42:14 · 3 answers · asked by Gaius_Cassius_Longinus 2 in Zoology

15 < 3/4(4-8g)

2007-12-18 09:41:44 · 6 answers · asked by Anonymous in Mathematics

2007-12-18 09:41:13 · 7 answers · asked by Anonymous in Mathematics

2007-12-18 09:38:47 · 1 answers · asked by Kulubaki 3 in Mathematics

Why are some elements/compounds paramagnetic, while others aren't, i think it's something to do with the D orbitals. but i'm not sure

thanks for any answers (within reason)

2007-12-18 09:34:31 · 1 answers · asked by WillsBradford 2 in Chemistry

2007-12-18 09:29:00 · 3 answers · asked by Anonymous in Geography

2007-12-18 09:28:51 · 18 answers · asked by B3RWY 1 in Astronomy & Space

What is 45/64 in lowest terms?

2007-12-18 09:27:54 · 11 answers · asked by Anonymous in Mathematics

2007-12-18 09:27:53 · 6 answers · asked by Alexander 6 in Physics

elemental fluorine F2, was not used in the halogens experiment because of difficulties in handling it. Also elemental astatine At2, was not used because of its radioactivity and short half life. How would you expect the reactivity of F2, and At2 to compare with those of the elemental halogens tested in the experiment.

I've understood every other question on this lab, but somehow this question has trumped me. :(

2007-12-18 09:27:39 · 1 answers · asked by Green Jeans 1 in Chemistry

2007-12-18 09:26:38 · 36 answers · asked by Anonymous in Paranormal Phenomena

You visit a planet that turns on its axis once every 24 hours. The radius of the planet at its equator is 5.72×106 meters.
You would feel weightless at the equator on this planet, if it rotated fast enough so that the centripetal acceleration at the planet's surface was equal to the acceleration due to gravity (which in this case is 12.5 m/s2). Calculate the new rotational period for this planet necessary to produce this effect! Calculate the period in hours.



(I tried using the equation a=((2*pi*r*f)^2)/r but I get the wrong answer every time.)

2007-12-18 09:25:39 · 3 answers · asked by ellenangel364 3 in Physics

I had a final in calc BCAP today and it was terrible. I keep running over the problems in my head.

Okay, it was something like "get the area between y=3x and y=(x^3)- (2x^2)"

I set 3x equal to [(x^3)- (2x^2)] I ended up with x=-1, x=0 and x=3. Then I was confused, thinking I'm only supposed to get two numbers. So I just used -1 for the lower limit and 3 for the upper. So it was (bear with me, no idea how to type this) a definite intergral with -1 and 3 as the limits and [(x^3)- (2x^2)-3x) dx.

thus, plugging the upper and lower limits in: (27-18-9)- (-1-2-3)= 6

2007-12-18 09:21:29 · 2 answers · asked by Sophie 2 in Mathematics

useing the compressed output of hydrogen and not trying to make electricity out of it,,what is the difference between these two words (orthohydrogen) and (parahydrogen) also what one would be useing a coil of wire and how would it be constructed

2007-12-18 09:20:12 · 1 answers · asked by tugboat 4 in Chemistry

A 0.10 kg piece of copper at an initial temperature of 95°C is dropped into 0.20 kg of water contained in a 0.28 kg aluminum calorimeter. The water and calorimeter are initially at 15°C.
What is the final temperature of the system when it reaches equilibrium?


Thanks everyone!

2007-12-18 09:20:07 · 1 answers · asked by Anonymous in Physics

2007-12-18 09:19:16 · 1 answers · asked by Anonymous in Mathematics

ok so i have a double displacement reaction the reactants are in ml they are aqueous solutions, anyway i need to find the precent yeild, i already have the actual yeild but how do i find the predicted yield?

2007-12-18 09:18:33 · 2 answers · asked by xxx_rocker_chick_xxx 3 in Chemistry

2007-12-18 09:18:17 · 5 answers · asked by alyssa 1 in Geography

1.) When a spring is released, the rod pushes against one cart with a given force. This cart pushes back with an equal force. Explain why this means that the total force on the system of the two carts is zero.


2.) If two carts have the same mass, how would you expect their velocities to compare with each other ? Why?

2007-12-18 09:17:11 · 1 answers · asked by Danielle P 1 in Physics

12x squared + 20x - 25

2007-12-18 09:15:03 · 3 answers · asked by 11:11 3 in Mathematics

I have read about the effects sonar has on whales and dolphins but can find little information about effects (if any) on other marine life and the marine ecosystem as a whole. Any ideas?

2007-12-18 09:14:53 · 3 answers · asked by TeganMc 2 in Zoology

What is the diffrence between the two I want to know it perfectly my book is not clear

2007-12-18 09:13:52 · 2 answers · asked by Anonymous in Chemistry

If so, do you believe Its the reason for "global warming". And or that its the earths own way of healing itself from Human consumtion. Opinions Please?

2007-12-18 09:11:26 · 6 answers · asked by ? 3 in Astronomy & Space

2007-12-18 09:09:29 · 5 answers · asked by fixitman 3 in Mathematics

factor: 16x^2-81
is it 8(2x^2-9) ?

and: 3-12y
is it 3(-4y)??

help with thia? 2x^2+7x= ?

thanks!

2007-12-18 09:08:30 · 4 answers · asked by Soprano 2 in Mathematics