Science & Mathematics - 18 September 2007

2007-09-18 13:35:03 · 3 answers · asked by John W 1 in Medicine

A cross-section of a standard or nominal "two by four" board actually measures 1 1/2 inch by 3 1/2 inch. the rough board is 2 inches by 4 inches but is planed and dried to the finished size. What percent of the wood is removed by planing and drying? OK so the answer is 34.375% but HOW step by step did you come up with the answer? I really have no clue!??

2007-09-18 13:33:37 · 8 answers · asked by frogbfound 4 in Mathematics

i get all the other cell parts but not this one..

2007-09-18 13:32:44 · 4 answers · asked by wlstn47 2 in Biology

A world-class sprinter can burst out of the blocks to essentially top speed (of about 11.5 m/s) in the first 15.0 m of the race. What is the average acceleration of this sprinter and how long does it take her to reach that speed? Please show/explain work clearly.

2007-09-18 13:32:09 · 1 answers · asked by nirmal 1 in Physics

It is on a worksheet and is provided with the following answer
A. hydronium ions than hydroxide ions
B. hyroxide ions than hydronium ions
C. sodium ions than hydroxide ions
D. hydroxide ions than sodium ions

2007-09-18 13:28:14 · 4 answers · asked by rappernana13 1 in Biology

2007-09-18 13:27:38 · 5 answers · asked by michelle j 2 in Zoology

How do you solve this equation for x
5x+7= 3x-5
Please explain

2007-09-18 13:27:19 · 4 answers · asked by Brandon 1 in Mathematics

Pick one:
1. 71 times more massive.
2. 81 times more massive.
3. 38 times more massive.
4. 18 times more massive.
5. 4 times more massive.

2007-09-18 13:26:26 · 1 answers · asked by cloud75z0 1 in Astronomy & Space

2007-09-18 13:25:15 · 4 answers · asked by Marie 1 in Geography

Show your work please.. I don't understand..

2007-09-18 13:21:39 · 6 answers · asked by Keys 3 in Mathematics

2007-09-18 13:20:27 · 1 answers · asked by Anonymous in Physics

Convert each other the following time measurements to its equivalent in seconds.

a. 58 ns
b. o.o46 Gs
c. 9270 ms
d. 12.3 ks

2007-09-18 13:20:15 · 1 answers · asked by cahill_hooker 2 in Physics

3|p-5|=2p

i keep getting p=5 2/3 ...am i right or wrong??

3|2a+7| =3a+12
i got a= -3 and a= -11/3

|3x-7| -5= -3
i got x= 3 and x=5/3

please correct me if im wrong in any..

2007-09-18 13:17:09 · 2 answers · asked by bliss 3 in Mathematics

Helping my brother with his homework and i really do no know what is a divisor.

2007-09-18 13:17:03 · 4 answers · asked by Eileen92 2 in Mathematics

How do plants make their poison??

*whatever type of plant

2007-09-18 13:12:02 · 2 answers · asked by soccer=♥ 1 in Botany

hi all, could u guys tell me there is a state of human body when u suddenly wake up from ur sleep n u feel u can see around with ur eyes open but cant move ur body it has a medical name can any body tell me wat it is?

2007-09-18 13:11:06 · 2 answers · asked by Ammad M 1 in Medicine

a.facilitated diffusion
b.osmosis.
c. diffusion
d active transport

2007-09-18 13:11:02 · 5 answers · asked by Mr. Arkansas 3 in Biology

Find the coordinates of three points that lie on the line passing through the points (0,0) and (3, -4). Explain your method. Please help me with this answer!

2007-09-18 13:09:08 · 7 answers · asked by Latrece S 1 in Mathematics

2007-09-18 13:09:06 · 11 answers · asked by Anonymous in Mathematics

2007-09-18 13:08:46 · 8 answers · asked by ? 2 in Astronomy & Space

here is the problem
4(21) - 8 + 9(21) - 1= 264

2007-09-18 13:05:56 · 30 answers · asked by Valerie5_0 2 in Mathematics

2007-09-18 13:05:42 · 2 answers · asked by Anonymous in Physics

ive tried lookin on some sites but no help.. sooo can someone help me please :-)

2007-09-18 13:05:06 · 3 answers · asked by Unique 1 in Biology

One-dimensional motion.

2007-09-18 13:03:46 · 2 answers · asked by Anonymous in Physics

what are some improtant things that that cells have?

2007-09-18 13:02:41 · 1 answers · asked by bynumbrodrick 2 in Biology

A car starts from rest and accelerates for 8.6 seconds with an acceleration of 2.8 m/s^2
How far does it travel in meters?

2007-09-18 13:00:47 · 4 answers · asked by fatiimaq08 3 in Physics

The sum of three consecutive integers is 66. Find the largest of these three integers.

2007-09-18 13:00:37 · 4 answers · asked by beatrizgonzalez784 1 in Mathematics

Okay there is a sharp turn going down the road toward my house. Everytime I turn on it I must slow down. Can someone please tell me the physics of this. Does this have to do with Angular momentum? Friction? I have no clue and I decided to do a project on it just because I have nothing else. Thanks for the answers. God bless!

2007-09-18 12:58:22 · 6 answers · asked by Albondigas 2 in Physics

What is the role of enzymes in dehydration synthesis?
This is my understanding: dehydration synthesis is when a water molecule is removed and two reactants combine to form a new larger molecule. What does the enzyme do? Speed up the reaction? what is hydrolase?

2007-09-18 12:57:53 · 1 answers · asked by Anonymous 2 in Biology

not a piepet?

2007-09-18 12:57:28 · 3 answers · asked by ilovjb144 2 in Botany