Science & Mathematics - 2 December 2007

Anyone know a journal that has journal article about muscle memory?

2007-12-02 11:25:11 · 1 answers · asked by Anonymous in Medicine

Suppose that at a soda bottling plant it is known that 20% of the bottles filled require some “rework” because of improper labeling. If the quality control manager takes a random sample of 25 filled bottles off the mass production process: Estimate the probability that at least 3 defective labels appear in the sample?

The proportion of defective labels in the sample can be approximated by normal distribution.

Please help me. I have no idea what to do on this problem...

2007-12-02 11:24:02 · 1 answers · asked by Jerse 3 in Mathematics

I'm doing a project that has to do with experiencing nature. I'm researching a creek, and something I have to fill in is the "Sight."

I need to draw specific organisms in detail, but I don't know which ones to draw. Can someone give a list of organisms in a natural setting in the suburbs right outside of DC?

If you can, use online sources because I need scientific names and stuff.

2007-12-02 11:22:22 · 4 answers · asked by Ally 3 in Biology

It's pre-algebra. HELP!!
She didn't teach us this stuff!

1. At the kolbus building, 3 out of every 7 employees use public transportation. There are 9,800 employees at the building. how many use public transportation?

2. The ratio of box seats at the ball park to general admission seats is 2 to 7. There are 2,500 box seats. How many general-admission seats are there?

3.Jacob delivered 90 circulars in 30 minutes. At this rate, how long will it take him to deliver 135 circulars?

4.At the airport, 4 planes land every 8 minutes. At this rate, how many planes will land in one hour?



I don't know what to do :{

2007-12-02 11:17:14 · 12 answers · asked by zeldahett 3 in Mathematics

i really need this in formation soo please help!

2007-12-02 11:17:05 · 2 answers · asked by Anonymous in Zoology

I have a question on my math HW and i cant figure it out.

For the system of equations given, write the augmented matrix. Use matrix row operations to put the matrix into row echelon or triangular form. Then solve the system.

x+2y+7z=5
5x -3z=8
2x-y =0



Any help would be awesome

2007-12-02 11:16:01 · 1 answers · asked by D 3 in Mathematics

A block of mass m moving with a initial velocity V moves over a rough surface with a coeffcient of kinetic fricton u (mew). How long does it take for the block to come to a complete stop

A. V^2/2ug
B. V^2/2mug
C. V^2/ug
D. V/2ug
E. V/2mug

2007-12-02 11:14:45 · 1 answers · asked by Shot Caller 2 in Physics

Let f(x) = (x^2)/(x^2 + 3)

a) find f'(x), solve f'(x) = 0 and get y -coordinate also.
b) On what interval of x's is f'(x) < 0 ?
c) On what interval of x's is f'(x) > 0 ?
d) Of the points found in (a), which one is a max, which is a min.


I can do this very easily on the calculator but we are supposed to show work. Also, part a is very simple for me to do but I don't know how to "properly" show parts b and c.

thank you

2007-12-02 11:12:17 · 1 answers · asked by Paulllll C 3 in Mathematics

y < 2x² - 4x - 3

I got the right answers for x-intercepts and the vertex...

where do you shade it? the inside or the outside of the parabola lines? how do you check it?

2007-12-02 11:07:12 · 1 answers · asked by Juan C 6 in Mathematics

ok so a bank teller is counting his money and notices that he has an equal number of tens and twenties. he also has $147 in other bills. he has $1,167 in all. how many tens and twenties does he have?
please show ur work
THANK U!!!!!!!!!!!!!!!!! SO MUCH
- Cloe

2007-12-02 11:06:52 · 3 answers · asked by Cupid Cleo 2 in Mathematics

Its length increases by 8.35 x 10^-4 m. The rod is then cooled from 24.5°C to the freezing point of water. By how much does the rod shrink?


(please give whole problem workout) thanks in advance

2007-12-02 11:02:17 · 2 answers · asked by Anonymous in Physics

Did anyone see in the new the other day about the 8 ft long scorpion that was found in Germany How is it that bugs after gotten smaller through out the years I dont understand

2007-12-02 11:01:59 · 10 answers · asked by unknown 1 in Zoology

Factor completely

6. 64 + a^3

7. 2x^4 + 16x

8. 32a^4 - 162b^4

2007-12-02 11:01:12 · 4 answers · asked by magicalskittlz 2 in Mathematics

2007-12-02 11:00:39 · 2 answers · asked by marisol s 1 in Astronomy & Space

A) Diffusing across the lipid bilayer without assistance
B) Diffusing through Na+ ion channels
C) Binding to Na+ carrier proteins
D) Binding to CI- ions

2007-12-02 10:59:04 · 4 answers · asked by Anonymous in Biology

im going to take a test on monay but i need help on some questions that i need to know so please help

1.Four of the five answers listed below are related by gender. select the exception
a.sertoli cells
b.cervix.
c.oocytes
d.myometrium
e.ovary

2. which of the folling structures is NOT found in mature sperm?
a.DNA
b.acrosome
c.mitochondria.
d.enzynes
e.ribosomes

the failure of the testes to decend into scrotal sac before birth called
a. capacitation
b. ejaculation
c. cryptorchidism

2007-12-02 10:59:00 · 1 answers · asked by cool girl 2 in Biology

A. Undergo cytolysis
B. Undergo Plasmolysis
C. Experience a decrease in turgor pressure
D. Be at equilibrium

2007-12-02 10:56:58 · 4 answers · asked by Anonymous in Biology

#1.Two long straight parallel wires separated by a distance of 20cm carry currents of 30A & 40A in opposite directions. What is the magnitude of the resulting magnetic field at a point 15cm from the wire carrying the 30A current & 25cm from the other wire?
#2.A point charge -Q is @ the center of a spherical conducting shell of inner radius R1 & outer radius R2. The charge on the inner surface of the shell is?
#3.If the current through a long solenoid is doubled while the coil's length is also doubled, keeping the total number of turns constant, the magnetic field at a point inside near the axis is?
#4.Two resistors are connected in parallel across a potential difference. The resistance of resistor A is twice that of resistor B. If the current carried by resistor A is I, then what is the current carried by B?
#5.Two identical bar magnets are dropped from equal heights. Magnet A is dropped from above the bare earth, whereas magnet B is dropped above a metal plate. Which will strike 1st?

2007-12-02 10:55:37 · 1 answers · asked by none 1 in Physics

Methanol, CH*3OH, is used in the production of many chemicals. Methanol is made by reacting carbon monoxide and hydrogen at high temperature and pressure.

CO(g) + 2H*2(g) --> CH*3OH(g)

a) How many moles of each reactant are needed to form 6.00 times 10*2g of CH*3OH?

b) Calculate the number of grams of each reactant needed to produce 10.0 mol of CH*3OH.

c) How many grams of hydrogen are necessary to react with 5.74 mol of CO?

2007-12-02 10:53:57 · 1 answers · asked by (: Muffin Man :) 2 in Chemistry

Here is the problem.
-2x(squared) +12x-16= 0

Sorry there wasnt a squared key but the -2x is squared.

2007-12-02 10:46:16 · 6 answers · asked by Heather<3 2 in Mathematics

can you try and put these in order for me? Thanks cause i need help with it.

Organ
Cell
Organism
organelle
tissue

2007-12-02 10:45:03 · 8 answers · asked by A.C. 2 in Biology

Find the most general antiderivative of:
3squarerootx - 8/x^9

I get confused about the squareroot..

2007-12-02 10:42:27 · 5 answers · asked by Anonymous in Mathematics

Solve the system using the substitution method.

2007-12-02 10:39:51 · 2 answers · asked by malibu0108 1 in Mathematics

Hi i was just wondering how do you establish internet and telephone communication on the moon if there was a permanent settlment there

2007-12-02 10:37:40 · 6 answers · asked by davidtn_108 1 in Astronomy & Space

if a chloroplast represented something on a movie set what would it be?

2007-12-02 10:37:23 · 1 answers · asked by ladida321 2 in Biology

NSW has had some wet weather for the last 2 weeks or so, is this a sign that the La Nina pattern has returned to Eastern Australia?

2007-12-02 10:35:07 · 2 answers · asked by ASK A.S. 5 in Weather

solve -4(-x+3)=16

2007-12-02 10:34:16 · 8 answers · asked by So H 1 in Mathematics

2007-12-02 10:32:54 · 13 answers · asked by Anonymous in Chemistry

This is a Physics concept question and I have no idea.

2007-12-02 10:32:30 · 2 answers · asked by JQ 9 2 in Physics

I'm doing a project that has to do with experiencing nature. I'm researching a creek, and something I have to fill in is the "Smells." My teacher wants description (i.e. Really stinky dump sitting next to me), and I don't have much to put down...

Does anyone have anything to share about smells in a natural setting in the transition between autumn and winter?

2007-12-02 10:30:32 · 19 answers · asked by Ally 3 in Weather