Science & Mathematics - 30 December 2007

Plz, translate these sentences which token from a moon text --> to arabic?
1-The Moon (Latin: Luna) is Earth's only natural satellite

2-The gravitational pull at its surface is about 17 percent of the Earth's

3-the Moon orbits near the ecliptic and not the Earth's equatorial plane

4-As a result of the conservation of angular momentum, the increasing semi major axis of the Moon is accompanied by a gradual slowing of the Earth's rotation by about 0.002 seconds per day per century

6-The Earth–Moon system is sometimes considered to be a double planet rather than a planet–moon system

2007-12-30 06:49:39 · 2 answers · asked by Lureen 1 in Astronomy & Space

2007-12-30 06:48:27 · 17 answers · asked by kris w 1 in Mathematics

2007-12-30 06:47:04 · 6 answers · asked by Love...love....love... 3 in Earth Sciences & Geology

The specific heat of copper metal of .385J/gC and it is .128 J/gC for gold. Assume you place 100 g for each metal, originally at 25C, in a boiling water bath at 100C. If each metal takes up heat at the same rate (the number of joules of heat absorbed per minute is the same), which piece of metal reaches 100C first? explain?

Wouldn't both reach 100C at the same time because the question actually sayseach metal absorbs heat at the same rate??

Thanks

2007-12-30 06:46:59 · 3 answers · asked by senseless.student 1 in Chemistry

Someone on here that sounded like they knew what they were talking about said that the universe is not only expanding, but accelerating. Next I was told that matter cannot reach the speed of light.

My assumption is that, say when matter reaches 99% the speed of light, then 99.9999999%, then 99.99999999999999%, eventually wouldn't it either stop, or reverse, or would it keep essentially adding "9's"?

2007-12-30 06:46:17 · 6 answers · asked by Anonymous in Astronomy & Space

2007-12-30 06:44:05 · 8 answers · asked by misha 1 in Mathematics

okay so im crossbreeding roses and i need some help :/ i want to know how to get rid of the females pollen and how to collect the pollen of the male and give it to the female

2007-12-30 06:43:22 · 1 answers · asked by Anonymous in Botany

can any once convert these measurments into atoms /molecules

3.50 moles K

0.573 moles NF3

62.5 moles CO2

7.90 *104 MOLES h20

& please convert these measurments into moles

56.7g C

5.67 g NF3

44.0 g CO2

8.43*10 g Ag

thank you!

2007-12-30 06:42:26 · 4 answers · asked by Gentiana B 1 in Chemistry

sum 1 told me its cos ap rince used 2 keep his dogs ere

2007-12-30 06:42:04 · 1 answers · asked by minni 3 in Geography

What mass will a sample of ammonium carbonate have if it contains 8.50 x 10^27 atoms?

My equation looked like this: (8.50x10^27 atoms)(1 mole/6.02x 10^23 atoms)(96.1g/1mol) but my answer is wrong apparently but maybe its teachers error?

But her (teacher) equation looked like

(8.50x10^27atoms)(1molec/14atoms)(1mole/6.02x10^23)(96.1g/1mole)

I asked a question previously and I got the answer that atoms and molescules are the same thing so is she right going abouts converting atoms to molecules.

2007-12-30 06:38:57 · 9 answers · asked by Ge1st 1 in Chemistry

2007-12-30 06:33:30 · 3 answers · asked by Anonymous in Mathematics

Which requires more heat to warm from 25C to 85C, 60g of water or 95.5g of ethylene glycol (specific heat = 2.39J/gC

So i used q=mst for each

(60g)(60C)(4.18) = q = 15048

(95.5g)(60C)(2.39) = q = 13694.7

so from this would the answer have the lower q? enthylene glycol?

2007-12-30 06:33:11 · 2 answers · asked by senseless.student 1 in Chemistry

a)y= ln (x^2+3x+4)
b)y= log x^2
c)y= ln x^2/ (3x-4)^3
d)y= 2x^3 e^4x
e)y= Square root[x^3+e^-x + 5]

2007-12-30 06:32:31 · 3 answers · asked by Anonymous in Mathematics

2007-12-30 06:31:07 · 6 answers · asked by 88888888 2 in Biology

Describe the path glucose takes as it enters the body from the outside environment and ends in the cell’s mitochondria.

2007-12-30 06:28:37 · 5 answers · asked by vanessa 2 in Biology

You know that:

Sin(angle) = 3

What to you punch into the $@$#@# calculator to get the $#%%# angle!!!

2007-12-30 06:26:32 · 5 answers · asked by Anonymous in Mathematics

Also, if you did split CO2 using heat, would the outcome be solid, liquid? When I say split I mean split it into carbon and oxygen.

2007-12-30 06:25:16 · 2 answers · asked by Anonymous in Chemistry

A 20 g piece of aluminum at 0C is dropped into a beaker of water. The temp of the water drops from 90C to 75C. What quantity of heat energy did the peice aluminum abosrb? The specific heat of aluminum is .902 J/gC.

to do this problem do you do this:

q=mst

q=(20g)(.902)(75-90)

?? Thanks.

2007-12-30 06:23:55 · 3 answers · asked by senseless.student 1 in Chemistry

2007-12-30 06:21:21 · 8 answers · asked by romantic_music2 1 in Engineering

If he can tell me cause i want to replace my stupid steel claw thing with earthquake. Earthquake is an extremely devistating attack and i want it.

2007-12-30 06:21:17 · 1 answers · asked by diamonddragon 1 in Earth Sciences & Geology

An object has a top, side, and front view that all have a round outside border, a perfect circle of diameter = 1. What is the maximum volume this object can have?

I am talking about orthogonal views like you see in drafting.

2007-12-30 06:18:11 · 4 answers · asked by Scythian1950 7 in Mathematics

cu2+ + OH- = ?

and should there be parenthesis around the OH in the equation?

2007-12-30 06:16:41 · 4 answers · asked by Anonymous in Chemistry

2007-12-30 06:15:03 · 3 answers · asked by needalife 1 in Biology

2007-12-30 06:13:04 · 14 answers · asked by Pain_of_Unhappiness2 3 in Biology

ok i'm used to seeing the enthalpy cycle with 3 arrows for the alternative route ,why would it have four ,as in this following equation:

N2O4(g) -----------------> 2NO2 (g)

2007-12-30 06:10:40 · 1 answers · asked by pumakelmusa 2 in Chemistry

2007-12-30 06:08:39 · 4 answers · asked by anat 1 in Biology

2007-12-30 06:00:50 · 1 answers · asked by Anonymous in Chemistry

2007-12-30 05:58:08 · 11 answers · asked by Anonymous in Mathematics

2007-12-30 05:57:22 · 5 answers · asked by Anonymous in Mathematics

Why is an excess of concentrated HCl necessary?
And whys is it necessary for the concentrated HCl to be cold?
Why is solid NaHCO3 used instead of liquid NaHCO3?
Why should the alkyl halide be dried carefully with anhydrous CaCl2 before distillation?

2007-12-30 05:56:03 · 2 answers · asked by qwerty09 2 in Chemistry