Science & Mathematics - 5 October 2007

What is the rate of change of line AB?

2007-10-05 08:20:59 · 2 answers · asked by Anonymous in Mathematics

2007-10-05 08:19:45 · 4 answers · asked by Anonymous in Mathematics

Last night our college pastor told us that if you freeze a snake it goes into a hibernation state and when thawed will "come back to life". Is that true?

2007-10-05 08:19:09 · 7 answers · asked by Garrett H 2 in Zoology

Ok folks out of 20 problems this is the last problem on my review sheet,(I have the answers) but I have the no clue on how to work it out and I'm stuck so please I have an exam this monday and our professor mentioned that there was going to be a similiar question like this one so anybody please help?!?!?!?!


A 10kg crate is pulled up a rough 20 degree incline by a 100N force parallel to the incline. The initial speed of the crate is 1.5m/s, the coefficient of kinetic friction is .4, and the crate is pulled a distance of 5m. Determine how much work is done by
(A)the gravitational force,
(B)the100N force?
(C)What is the change in kinetic energy of the crate?
(D)What isthe speed of the crate after it is pulled 5m?
(E)How much mechanical energy is lost?

2007-10-05 08:17:26 · 2 answers · asked by ls1shadow 1 in Physics

2007-10-05 08:14:58 · 5 answers · asked by Valand M 1 in Mathematics

...parallel?

2007-10-05 08:14:45 · 3 answers · asked by Anonymous in Mathematics

A sample of solid naphthalene is introduced into an evacuated flask. Use the data below to calculate the equilibrium vapor pressure of naphthalene (C10H8) in the flask at 35°C.
===========ΔH°f (25°C)====ΔG°f (25°C)
C10H8(s)====78.5 kJ/mol=====201.6 kJ/mol

C10H8(g)====150.6 kJ/mol====224.1 kJ/mol



A) 890. mmHg
B) 0.21 mmHg
C) 696 mmHg
D) 0.086 mmHg
E) 833 mmHg

2007-10-05 08:11:40 · 1 answers · asked by Anonymous in Chemistry

remainder is:

2007-10-05 08:06:16 · 5 answers · asked by TheRaver 2 in Mathematics

a) Which of the following elements has the largest first ionization energy?

Po Ba Bi Pb

b) Which of the following has the smallest atomic radius?

Cl F Br I

2007-10-05 08:05:45 · 3 answers · asked by Got a quick Question.... 2 in Chemistry

to be exact a 35,000 CMRR value

2007-10-05 08:04:06 · 4 answers · asked by Kyle M 2 in Engineering

Assuming they are the spirits of people.Do they retain any of the rights they had in life?Or,are they fair game to exploit in any way we'd like?Hunting,chasing and generally getting into their business.Please, don't say you do it to help them.That's not what you're all doing.

2007-10-05 08:03:59 · 9 answers · asked by Dr. NG 7 in Paranormal Phenomena

a. glucose
b. galactose
c. ribose
d. maltose

2007-10-05 08:03:06 · 3 answers · asked by Anonymous in Chemistry

please hurry

2007-10-05 08:01:33 · 4 answers · asked by ilovedstny 1 in Mathematics

2007-10-05 07:58:48 · 7 answers · asked by C鳡r V 3 in Mathematics

1.) 3 miles=_______m
2.) 0.65mm=______cm
3.) 1m 5cm=_______cm
4.) 1/2inches=_______yards

2007-10-05 07:55:42 · 4 answers · asked by cmm14513 2 in Mathematics

Alex invested $27,000 in two accounts: one that pays 2% simple interest and one that pays 3% simple interest. At the end of the year, his total return was $685. How much was invested in each account? Please explain your answer.

2007-10-05 07:52:26 · 7 answers · asked by LeXy 3 in Mathematics

Will you please help with my science homework?
My science teacher isnt the best, she doesnt explian things.
Ive have homework about Cells

Question 1)
Name the cell to the Cell Function,
☺Photosynthesis
☺movement of mucus
☺Absorption of water
☺Carrying oxygen.
(no names are give just there jobs)

Quest 2)
a)What is the job of the head of a sperm cell?
b)What is the job of the tail of a sperm cell?

Quest3)
Disscuss the differences between a pet rabbit and a 'cyber' pet. Why is one living and the other not? Refer to the seven life processes.

quest 4)
For the Parts of cells shown, draw a line to match them to their function:
CELLS:
Cell Wall
Vacuole
Chloroplasts
Cell Membrane
Cytoplasm
Nucleus
JOBS:
consists of cell sap under pressure
photosynthsis takes place here
controls what the cell does and what it is
here substances are made and/or broken down
pro vides support for the cell
controls movement in to and out of cell

2007-10-05 07:48:48 · 2 answers · asked by Anonymous in Other - Science

2007-10-05 07:47:39 · 23 answers · asked by KarlosCharlos 2 in Astronomy & Space

If you are good at physics, or enjoy doing it, I need some serious help. I've researched and have purchased the book, Physics Demystified, and I still don't understand.

I'm currently working on this worksheet and all the problems seem totally irrevelant to what I was just "taught."

Please send me an email if you would be willing to help me with my assignment promptly. I am not asking for the answers, but there are 8 problems I have been staring at for two days not knowing what to do.

Thanks.

2007-10-05 07:42:49 · 4 answers · asked by alexie. 4 in Physics

Whats this all about?

2007-10-05 07:41:45 · 3 answers · asked by vic 1 in Earth Sciences & Geology

USE A WATCH ???

2007-10-05 07:41:44 · 16 answers · asked by Anonymous in Astronomy & Space

I have a blower going to a 4"d hose then it splits into two 4"d hoses. Will the system maintain equal pressure or will the pressure be cut in two at the split? Make any necessary assumptions.

2007-10-05 07:39:58 · 2 answers · asked by Brian 2 in Engineering

I know the answer but i'm not sure how i got it, can you help?

2007-10-05 07:35:30 · 8 answers · asked by Michele H 1 in Zoology

I need to do a power point for science class that has to do with a red fox and I can't find anything on the internet that isn't blocked. So can you guys help me out? Then I need to know what a rabbit eats, and then a Hare....it's a little complacated..lol but I have to do it..

2007-10-05 07:30:54 · 6 answers · asked by Anonymous in Zoology

http://www.home.pon.net/785/images/tower2.jpg

2007-10-05 07:30:23 · 5 answers · asked by Nikolai 1 in Engineering

i was watching a movie and these people made this person chug a carton of this yellow liquid, which was poisonous, and it made him automatically bleed like in his mouth. i was wondering if it was anti-freeze or what was it?lol

2007-10-05 07:24:39 · 10 answers · asked by casey 2 in Chemistry

2007-10-05 07:23:09 · 9 answers · asked by adamsaleatha 1 in Mathematics

Where does the radiated energy difference come from?

2007-10-05 07:20:54 · 4 answers · asked by Anonymous in Physics

I used copper sulphate solution as electrolyte and then tried with Sodium chloride and dilute acids .All cases in place of copper I found black material is depositing on cathode.any one suggest a good electrolyte for copper plating?

2007-10-05 07:20:31 · 1 answers · asked by kuriaksabu 1 in Chemistry

Tell me something about myself..

2007-10-05 07:16:51 · 6 answers · asked by mikey 3 in Parapsychology