Science & Mathematics - 20 October 2007

I think the answer is 24, is that right?

2007-10-20 17:36:44 · 12 answers · asked by yeahyeahyeah 4 in Mathematics

In my exercise booklet it sometimes says acceleration equals m/s^2 and sometimes = m/s, and the same with velocity...

so how do i know which one is for which?

2007-10-20 17:36:36 · 2 answers · asked by LovingAngelsInstead 2 in Physics

2007-10-20 17:36:00 · 3 answers · asked by Tango 1 in Physics

Reason asking wanted to try to make a ping pong table with the top being make out of plexiglass.

2007-10-20 17:35:43 · 2 answers · asked by jdawg 1 in Physics

I don't know my blood type but I know my mom's. So is it safe for me to assume that we have the same type?

2007-10-20 17:35:35 · 8 answers · asked by disturbance2dsociety 2 in Medicine

2007-10-20 17:33:21 · 3 answers · asked by R E 2 in Physics

2007-10-20 17:28:00 · 5 answers · asked by yeahyeahyeah 4 in Mathematics

2007-10-20 17:14:59 · 1 answers · asked by Imperative 2 in Chemistry

I would respect a step be step explanation.
Breaking each step down so a lame person can understand.

'Mathfriend' enlightened me more of how to do the problem.
But I still don't understand. There's no point in anyone giving me the answer to this problem. How exactly do u solve it?

2x^4 + 11x^3 + x^2 – 10x - 4
-what are possible rational roots?
-Actual rational roots?
-Other real roots?
-Divide by (x-r) where r is a root. Repeat with as many roots as you know. Can you find the other roots?

2007-10-20 17:14:40 · 4 answers · asked by ? 3 in Mathematics

The half-life of iodine-131 is approx. 8 day. How much of an original sample will be left after 24 days?
- I dont get how to answer it theres no measurments being used!?

2007-10-20 17:07:24 · 6 answers · asked by siimpli_mi 2 in Chemistry

A: 20/12
B: 4/3
C: 1 7/12
D: 1 1/2

2007-10-20 17:05:49 · 8 answers · asked by acuraboy1978 2 in Mathematics

What is the molecular equation for hydrocholric acid (HCI) and NH4OH

2007-10-20 17:03:51 · 2 answers · asked by Tiffany 2 in Chemistry

2007-10-20 17:00:39 · 8 answers · asked by Anonymous in Astronomy & Space

Answer just one of the questions is fine. I also need the length, age, and area. Thank you! Oh yeah, and this is not for homework.

2007-10-20 16:59:08 · 4 answers · asked by Anonymous in Earth Sciences & Geology

Question 19
Glycine is one of the amino acids that forms proteins. Protein that is not required in the body is broken down in the liver. Unwanted nitrogen is converted to urea and eliminated in the urine.
H2NCH2COOH glycine (H2N)2CO urea
The maximum mass of urea (relative molecular mass = 60) that could be eliminated as a result of the breakdown of 1.00 g of glycine (relative molecular mass = 75) is, in gram,
A. 0.40
B. 0.80
C. 1.00
D. 1.60

2007-10-20 16:52:47 · 1 answers · asked by Robby 1 in Chemistry

2007-10-20 16:51:58 · 5 answers · asked by Anonymous in Earth Sciences & Geology

find the resultant of each pair of forces
-forces of 7N east and and 12N north

(the answer to this was 13.9 N, N30°E... but i dont know how to get this answer)

2007-10-20 16:49:32 · 3 answers · asked by internet nickname 1 in Physics

Why is it so hard to swat a really annoying fly that keeps harrassing you? And why cant we eradicate them? What is their purpose?

2007-10-20 16:48:52 · 5 answers · asked by Anonymous in Zoology

Hey! I am doing my chemistry mid-term study guide and some questions came up. Please help!!! Thanks
Can you explain it as well so that I know why?

1) Which element would require the least amount of energy to remove an electron from the outer shell (ionization energy)?
2) Which element would have the highest electronegativity?
3) Which element would be the mest reactive metal?
4) Which element would combine with two halogens in an ionic bond?
5) which element would have the smallest atomic radius?
6) which element is the most reactive non-metal?
7) which element has characteristics similar to both metals and non-metals?
8) which element would require the most amount of energy to remove an electron from the outer shell (ionization energy)?
9) which element would have the lowest electronegativity?
10) which element is most likely to be totally un-reactive?

2007-10-20 16:40:09 · 4 answers · asked by july28usa 3 in Chemistry

How do you convert liters to moles?

Thanks!

2007-10-20 16:39:30 · 7 answers · asked by db 3 in Chemistry

2x^4 + 11x^3 + x^2 – 10x - 4
-what are possible rational roots?
-Actual rational roots?
-Other real roots?
-Divide by (x-r) where r is a root. Repeat with as many roots as you know. Can you find the other roots?

2007-10-20 16:35:08 · 5 answers · asked by ? 3 in Mathematics

im having trouble understanding this? sqrt 10 x sqrt 20
and like sqrt 63 can someone explain how you solve these step by step and explain more on sqrts...

2007-10-20 16:33:33 · 6 answers · asked by Anonymous in Mathematics

2007-10-20 16:33:26 · 22 answers · asked by jerimon 1 in Parapsychology

2007-10-20 16:32:56 · 22 answers · asked by atifali_77 2 in Mathematics

What is the molecular, total, and net Ionic equations for zinc and CuSO4?

2007-10-20 16:32:09 · 1 answers · asked by Tiffany 2 in Chemistry

can sperm grow or live anywhere besides where they are formed?

2007-10-20 16:27:18 · 3 answers · asked by MeGaN 4 in Earth Sciences & Geology

In snapdragons the inheritance of a lower color of size of leaves are examples of incomplete dominance. When red-flowered plants are crossed with white ones, all the flowers are pink. Similarly, when plants with broad leaves are crossed with plants of narrow leaves, the offspring have intermediate leaves. Cross a homozygous red-flowered, broad-leaved plant with a homozygous white-flowered narrow leaved plant. What kind of offspring are produced in the F1 generation? Now cross two of these plants and find the phenotype ration of the offspring. Explain the relationship of the 9:3:3:1 ration to the one you obtained.

Plz help..this is due monday and im a freshman in H bio and my teacher hates me and i seriously asked for help multiple times but my teach acts like i'm not even there

2007-10-20 16:26:59 · 2 answers · asked by Anonymous in Botany

do you agree that people have the opption to reduce pollution and green house emissions, but just don't want to ? what would you think is the best sollution to reducing gases or preventing it?

2007-10-20 16:26:09 · 6 answers · asked by cassandra8507 2 in Earth Sciences & Geology

*I'll pick you as best answer if you also include: What does nature have to do with science*

haha<3

2007-10-20 16:19:02 · 3 answers · asked by loves_the_beach 4 in Other - Science

How to find out the cause of losing sodium in the human body?
Is there any organization studying the relevant phenomenon? Will you help?
A 20 year old girl, who is hospitalized in Beijing, is suffering losing sodium but doctors there can not find out the cause.
She can not retain sodium in her body and keeps losing it. She is now very weak and is losing weight rapidly.
Plz help the girl!!!
plz contact maria3191964@yahoo.com

2007-10-20 16:18:49 · 3 answers · asked by weddreamer 2 in Medicine