Science & Mathematics - 16 February 2007

2007-02-16 19:15:20 · 5 answers · asked by IL DIVO 1 in Weather

Where must the object be placed in order to have an inverted image on the opposite side of the lens to the object?

Where must the object be placed to have a virtual erect image?


I can tell you one MIGHT be the focal point, but I truly do not know, please help!

2007-02-16 19:15:17 · 1 answers · asked by James D 1 in Other - Science

place about 5 drops of ethanol ina test tube, then add 1ml of water. add about 5 drops of KI solution. add 10% NaOH solution drop wise with shaking until the iodine color disappers and the solution if faintly yellow. examine the contents of the tube and note the color. what the rsult?

2007-02-16 19:14:31 · 2 answers · asked by Anonymous in Chemistry

Where must the object be placed in order to have an inverted image on the opposite side of the lens to the object?

My guess is the focal point, but I am just guessing

2007-02-16 19:13:44 · 2 answers · asked by James D 1 in Physics

2007-02-16 19:12:23 · 3 answers · asked by maltsevam 2 in Botany

2007-02-16 19:12:08 · 4 answers · asked by stilettos 2 in Astronomy & Space

2007-02-16 19:09:41 · 1 answers · asked by nishad 1 in Physics

2007-02-16 19:03:41 · 12 answers · asked by TUBE LIGHT 1 in Zoology

2007-02-16 19:02:36 · 1 answers · asked by Praveen V 1 in Chemistry

In need these questions answers:
What are Rational Numbers?
What are Real Numbers?
What are Imaginary Numbers?
What are Irrational Numbers?
What are Integer Numbers?

2007-02-16 19:01:11 · 3 answers · asked by Peter H 1 in Mathematics

2007-02-16 18:59:29 · 2 answers · asked by eiger 3 in Mathematics

i placed 1 ml dilute potassium permangate ina clean test tube. i added 2 drops of ethanol. i warm gently in a water bath.. what would be the result after 5 minutes?

2007-02-16 18:58:08 · 5 answers · asked by Anonymous in Chemistry

i wish i got tell u more about it on here but its just has to many parts to it,but i know it will help everyone on the plant is all i can say

2007-02-16 18:57:20 · 8 answers · asked by ronnie b 1 in Astronomy & Space

engineering maths,

2007-02-16 18:57:07 · 2 answers · asked by piyush 2 in Engineering

2z^3+3z^2+2z-3=0 cant solve it plzz help tnx

2007-02-16 18:56:58 · 6 answers · asked by arn_14 2 in Mathematics

2007-02-16 18:56:34 · 5 answers · asked by Bad Church Lady 2 in Biology

2007-02-16 18:53:53 · 5 answers · asked by rainbowrising46 1 in Zoology

thanx pplz^ ^

2007-02-16 18:52:36 · 10 answers · asked by Siela 1 in Mathematics

1. analysis of ten ceramic dishes showed that four dishes contained lead levels that exceeded federak safety standards.
2. marble statues undergo corrosion in acid rain.
3.statues corrode in acid rain because the acidity is sufficent to dissolve calciom carbonate, the major substance of marble.

my guess is 1. theory, 2. observation and 3 hypothesis....what would u say

2007-02-16 18:48:29 · 7 answers · asked by orange_crush_05 6 in Chemistry

the lift offs we all watch from earth 2,000 gals of gas burn, but they return lift offs have never been viewed from outside the spacecraft. doesn't it seem strange that gas needs air to burn and the moon is lacking oxegen what gives the spacecraft momentum to return back to earth, why is the video only shown from inside the spaceship?

2007-02-16 18:42:30 · 8 answers · asked by stephanie b 1 in Astronomy & Space

We've had some pretty bad weather where I live lately. I live by water, and most of it has frozen over. As we drive by a part of the river, I noticed that in between the ice there were patches of water. Floating around on these patches were ducks. This confuses me, I was always under the impression that ducks migrate.

2007-02-16 18:38:03 · 10 answers · asked by ???? 2 in Zoology

For less than hundreds of dollars?

2007-02-16 18:36:17 · 2 answers · asked by molly hadley 2 in Chemistry

I think it's something to do with multiplying by the number 9, you count on your fingers and get the answer to 8 x 9 or something like that. I just don't know how to do it. Does anyone know what I'm talking about?

2007-02-16 18:35:23 · 4 answers · asked by Halley 3 in Mathematics

I am doing a science project for school and i need
some information on this for my references or
whatever.
So does any one know any ways of making ice last
longer in room temperature by adding stuff to it or
something like that?

2007-02-16 18:31:32 · 8 answers · asked by RecycleBin 1 in Physics

If x denotes the length of a side of an equilateral triangle, express the area of the triangle as a function of x.

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The base of a rectangle is centered on the x-axis, while the upper two vertices lie on the positive portion of the parabola y = 14 - x2. Suppose that the coordinates of the upper right vertex of the rectangle are (x, y). Express the area of the rectangle as a function of x.

2007-02-16 18:30:41 · 4 answers · asked by Anonymous in Mathematics

2007-02-16 18:29:57 · 13 answers · asked by asianmr2 1 in Biology

In the gas phase one mole of CH4 and one mole of H2O gas react to form one mole of CO and three moles of H2 At T = 1500 Kelvin , Kp = 11000 tm2


If three mole of CO and nine moles of H2 react to form three mole of CH4 and three mole of H2O , calculate Kp at the same temperture.

2007-02-16 18:25:41 · 3 answers · asked by xopiggy 2 in Chemistry

How do u calculate the length of the hollow metal rod for different frequencies? What formulas do u use?

2007-02-16 18:25:39 · 1 answers · asked by Anonymous in Other - Science

2007-02-16 18:18:31 · 42 answers · asked by Anonymous in Medicine

2007-02-16 18:16:24 · 2 answers · asked by kirda 1 in Engineering