Science & Mathematics - 23 September 2007

I can't remember exactly when it does it, but why on earth does it do it in the first place?

2007-09-23 10:32:17 · 8 answers · asked by Paige 2 in Earth Sciences & Geology

Copper Sulfide is formed when copper and sulfur are heated together. In this reaction, 127g of copper reacts with 41g of sulfur. After the raction is complete, 9g of sulfur remains unreacted. What is the mass of copper sulfide formed?

2007-09-23 10:28:09 · 2 answers · asked by Anonymous in Chemistry

2007-09-23 10:27:51 · 18 answers · asked by student 2 in Biology

2007-09-23 10:26:06 · 2 answers · asked by damigurl05 1 in Biology

2007-09-23 10:25:06 · 4 answers · asked by Annoymous 1 in Chemistry

Yes, I'd like some real science geeks to help me with this.
Factors:
1) The subject starts from a stand-still (relative to Earth).
2) We assume that even though the subject is gaining in mass as he approaches light-speed that the acceleration doesn’t slow.
3) We assume that the subject could be awake and be able to function reasonably that this g-force (i.e. eat, drink, play video games, change his clothes…)
4) Enlighten me as to what other physical problems might be encountered that I don’t know about.

Thanks!

2007-09-23 10:20:47 · 8 answers · asked by Reality Man 4 in Astronomy & Space

Can I get some help with this Algebra problem. I would greatly appreciate it.
Simplify. √20/5 - 1/√5

2007-09-23 10:20:12 · 9 answers · asked by Ozzie 3 in Mathematics

limit x^2 (x+1)^3 / (x-2)^2 (x-4)^4
x=>2


How do i solve this??

2007-09-23 10:20:07 · 2 answers · asked by goodygoody 1 in Mathematics

2007-09-23 10:14:15 · 2 answers · asked by Anonymous in Mathematics

Okay R+14 equals 39, I figured that much out. But whats the value of R in the equation?

Yes I suck at math, yes my brain rejects it. Please help. Thanks in advance!

2007-09-23 10:13:15 · 10 answers · asked by Anonymous in Mathematics

Find two equations of the tangent lines to the curve below that are parallel to the line x - 2y = 2.

y = (x-1)/(x+1)

2007-09-23 10:10:55 · 6 answers · asked by Anonymous in Mathematics

0.2x^2+1.2=3.4

-3.31662

but i only have 4 blocks of answers i could put there.
am i wrong.

(x+3)(x-3)=16-2x^2
my answers is
5
---
√3
how am i wrong

2007-09-23 10:10:38 · 6 answers · asked by hola_kity2008 1 in Mathematics

first off, is finding the one to one the same as finding the inverse, and if so, how do I find if this is a one to one.

f(x)=(sqrt x-2)/(x-3)

some detail explanation would be great, because I am a little lost.

2007-09-23 10:08:38 · 3 answers · asked by D 2 in Mathematics

please explain why or why not it isnt

2007-09-23 10:05:55 · 2 answers · asked by Anonymous in Chemistry

2007-09-23 10:00:21 · 9 answers · asked by alenailuy 1 in Chemistry

23.5

0.046

then could you explain a little? thanks

2007-09-23 10:00:16 · 1 answers · asked by Anonymous in Chemistry

I dont get what i a binary system i have to reasearch it but i can't find helpful sites. I'm talking bout the binary system dealing with space not the one with math. so please help Thankz
----J<3B

2007-09-23 10:00:06 · 2 answers · asked by RiiCaN MaMii 1 in Mathematics

convert

0.015 g=_______mg

I don't understand how to do this and frankly I am going to fail unless someone can explain it in really simple terms please and thank you.

2007-09-23 09:55:42 · 6 answers · asked by Anonymous in Medicine

HELPPPPPPPPPPP AHHHHHHHHHHHHHHHHHHHHHHHHHHHHh

2007-09-23 09:54:21 · 1 answers · asked by Shawn Carter 1 in Physics

2007-09-23 09:53:01 · 10 answers · asked by varghese p 3 in Physics

THe acceleration of grav is 10m/s².
WHat is the greatest acceleration a runner can muster if the friction between her shoes and the pavement is 74% her weight?
Answer in m/s².

THANK YOU VERY MUCH

2007-09-23 09:51:41 · 1 answers · asked by Ghost Eye 1 in Physics

2007-09-23 09:50:36 · 5 answers · asked by rockreddog 1 in Astronomy & Space

2007-09-23 09:50:29 · 4 answers · asked by varghese p 3 in Physics

A 6-kg bucket of water is being pulled straight up by a string. The upward acceleration of the bucket is constant, with magnitude of 3 m/s^2.

The tension in the rope is then?

Now assume the bucket is accelerating downward, with magnitude 3 m/s^2.

The tension in the rope is then?

I need some help with this problem. Newton's Laws have really confused me. Any help would be great. Thanks!

2007-09-23 09:50:13 · 1 answers · asked by Anonymous in Physics

homework. answer asap thanks

2007-09-23 09:48:03 · 4 answers · asked by Anonymous in Mathematics

After a landslide, who's responsible for paying for the damage? The geologists, or the people who didn't ask the geologists if the area was safe?

2007-09-23 09:47:59 · 3 answers · asked by Kitsune Kage 2 in Earth Sciences & Geology

Find the largest interval on which the function f is increasing and the largest interval on which f is decreasing.

f(x)=-(x+10)^2

2007-09-23 09:45:37 · 1 answers · asked by Anonymous in Mathematics

In our study, we are measuring the effect of exercise on muscle fibre size and neural control. The STUDY group (sample size 20) will have certain parameters measured before the exercise and then, the same parameters will be measured after the exercise. Thus the data will consist of pre-exercise values and post exercise values. If the participants are within the normal distribution curve of the population (healthy, adults), is it required to have a CONTROL group?

2007-09-23 09:45:23 · 1 answers · asked by Anonymous in Mathematics

How many milliliters should you administer per day?

worth 10.points.

2007-09-23 09:43:34 · 3 answers · asked by Anonymous in Medicine

Function: f(x)= (x^2)-2x-7

1) Find all intercepts of the graph of f (Please include all steps especially when finding x)
2) Express the function f in standard form
3)Find the vertex and axis of symmetry

2007-09-23 09:42:55 · 3 answers · asked by Anonymous in Mathematics