Science & Mathematics - 11 November 2007

Answer in units of g.

2007-11-11 05:40:23 · 1 answers · asked by Anonymous in Chemistry

2007-11-11 05:40:12 · 2 answers · asked by Anonymous in Geography

How would you calculate this without knowing the mass of the second object?

2007-11-11 05:37:35 · 3 answers · asked by Anonymous in Physics

solving for x

2007-11-11 05:33:16 · 9 answers · asked by garcia1456@sbcglobal.net 1 in Mathematics

2007-11-11 05:32:53 · 8 answers · asked by Gina M 1 in Mathematics

if so, id like to hear your stories. also if you havent yet, what would u do if you did see one? personaly, if i saw a ghost i think id be so scared i'd probably just freeze with shock, or pass out from fright.

2007-11-11 05:29:12 · 11 answers · asked by Janeywaney 4 in Paranormal Phenomena

If the brightest star is altair, what part of sky is that:

http://www.speedyshare.com/156329507.html

can't fit it in any way... HELP

2007-11-11 05:28:14 · 2 answers · asked by Anonymous in Astronomy & Space

For this function there are three important intervals (-infinity, A], [A,B], and [B,infinity) where A and B are the critical numbers.

Find A and B

Also, find where f(x) is increasing and where its decreasing (intervals)

2007-11-11 05:25:05 · 2 answers · asked by diecast 3 in Mathematics

total ionic equation
and net ionic equation for both equations.

2007-11-11 05:19:00 · 1 answers · asked by Slash_GNR 1 in Chemistry

.if a glacier moves .5m per day, how far does it move in 100 years?


tell me and show how you did it

2007-11-11 05:17:48 · 7 answers · asked by Ave 3 in Mathematics

Besides increasing the temperature of the solvent, what can also help increase crystal growth?

2007-11-11 05:16:14 · 1 answers · asked by wrooney97 2 in Earth Sciences & Geology

i am havign a HORRIBLE time with this math class and am just not getting it. I'm trying to understand how to figure this stuff out,. what about longer problems like this one:

-2a + 4 + 3a = 5 - 26

How do you figure this out?

2007-11-11 05:15:32 · 5 answers · asked by Addie 2 in Mathematics

6 = (2x/x-1) + P/2????

2007-11-11 05:14:17 · 4 answers · asked by Becks B 1 in Mathematics

2007-11-11 05:11:43 · 4 answers · asked by coach_freak06 1 in Earth Sciences & Geology

2007-11-11 05:10:29 · 12 answers · asked by cjopm 1 in Mathematics

Because I want to keep the environment clean and not dirty. I want to keep our planet clean from oil spills in the ocean and other bad things too that can happen to our environment.

2007-11-11 05:09:38 · 2 answers · asked by Anonymous in Earth Sciences & Geology

2007-11-11 05:08:10 · 5 answers · asked by Where Are You Summer?! 3 in Chemistry

prove the identity:

2cot2x + tanx = cotx

could you please explain each step..cheers.

2007-11-11 05:07:39 · 2 answers · asked by clueless 1 in Mathematics

Now I don't have a problem with Homosexuals or what they do... they can do what they want. But wasn't man meant for woman? Sperm cells instinctively have tails to swim in search of egg cells to penetrate them, what are they swimming for if they end up in another man's anus?

2007-11-11 05:06:55 · 6 answers · asked by Anonymous in Biology

F(l)_____________F(r)
---->|2kg| |8kg| |6kg|<---
F(l) is the force on the left and is 12 N
F(r) is the force on the right and is 8N

2007-11-11 05:02:23 · 1 answers · asked by scoot 2 in Physics

Here is the question:
Two balls of mud collide head-on in a perfectly inelastic collision. Their respective masses are m1=0.5kh and m2=0.25kg. m1 ismoving left to right before the collision with a speed of 4m/s and m2 is moving from right to left before the collision with a aspeed pf 3m/s. (a) Find the speed of the composite ball after the collsion (b) How much kinetic energy is lost during the collision?

2007-11-11 05:02:08 · 2 answers · asked by Anonymous in Physics

2/x+1 + 3/x+2 = 2

2007-11-11 05:00:05 · 9 answers · asked by Anonymous in Mathematics

If it is possible, give at least one example.

2007-11-11 04:57:19 · 1 answers · asked by charm 1 in Physics

2007-11-11 04:55:58 · 3 answers · asked by Anonymous in Earth Sciences & Geology

What is alkalinity equivalents and how are you going to compute the total alkalinity from it?

1.0x10^-3 is the alkalnity equivalents

total alkalinity = [HCO3^-](bicarbonate anion)+2[CO3^2-](carbonate anion)+[OH-](hydroxide anion)-[H+](hydronium cation)

pH = 10.4

2007-11-11 04:54:50 · 1 answers · asked by gelo 2 in Chemistry

1. Iron metal can be produced from the mineral hematite, Fe2O3, by reaction with carbon:

Fe2O3(s) + C(s) --> Fe(s) + CO(g)
(a) Balance the equation.
(b) How may moles of carbon are needed to reach with 525 g of hematite?
(c) How may grams of carbon ar eneede dto react with 525 g of hematite?

2. In the preparation of iron from hematite (above question), how many kilograms of iron are present in 105 kg of hematite?

3. We saw in (question 1) that iron metal can be made by heating iron ore with carbon according to the (unbalanced) equation:
Fe2O3(s) + C(s) --> Fe(s) + Co2(g)
(a) How many kilograms of iron can be obtained from the reaction of 75.0 kg of Fe2O3?
(b) If 51.3 kg of iron is obtained from the reaction in part (a), what is the percent yield?

4. Which of the following substances are likely to be soluble in water?
(a) ZnS
(b) Au2(Co3)3
(c) PbCl2
(d) MnO2

2007-11-11 04:53:48 · 1 answers · asked by Anonymous in Chemistry

An object, with mass m and speed v relative to an observer, explodes into two pieces, one two times as massive as the other; the explosion takes place in deep space. The less massive piece stops relative to the observer. How much kinetic is added to the system during the explosion, as measured in the observer's reference frame?

2007-11-11 04:51:58 · 2 answers · asked by Anonymous in Physics

Okay here's a question on my homework sheet and i don't even know where to start on it:

A daring cowboy/girl sitting on a tree limb whishes to drop vertically onto a horse galloping under the tree. The speed of the horse is 10m/s and the distance from the limb to the saddle is 3.0m. What must be the horizontal distance between the saddle and the limb when the cowboy/girl makes his/her move?

As I said i don't even know where to start

2007-11-11 04:50:45 · 5 answers · asked by stefany 1 in Physics

I am writing a huge term paper on MnSOD, and I can not find anything on how the metal is bound to it's coordinating ligands. Are these interactions covalent, electrostatic, or is the metal just "caged in"? If you have a source, I would greatly appriciate it.

2007-11-11 04:50:22 · 1 answers · asked by J 2 in Chemistry

2007-11-11 04:47:49 · 5 answers · asked by hmmm 1 in Botany