Science & Mathematics - 11 November 2007

2007-11-11 13:39:16 · 7 answers · asked by I'm Obviously Confused 2 in Astronomy & Space

when cutting rafters what degree of cut is required for a 10 foot wide building with 4 and 12 slope

2007-11-11 13:34:08 · 1 answers · asked by Anonymous in Engineering

Is there a way to determine whether a material can be considered brittle or ductile based on its yield strength or ultimate strength in compression & tension?

2007-11-11 13:31:20 · 8 answers · asked by Joseph H 2 in Engineering

b) 10ft.
c) 12ft.
d) 15ft.
a) (i had wrong) Thx for everyones answers !

2007-11-11 13:29:12 · 1 answers · asked by lori gurl 1 in Engineering

a) measured at constant temperature and pressure
b) that equal 1 L
c) that equal 22.4 L
d) measured at STP

2007-11-11 13:28:16 · 1 answers · asked by Anonymous in Chemistry

What happens to volume of a gas sample if the number of moles of a gas is doubled under constant temperature and pressure?

2007-11-11 13:27:20 · 3 answers · asked by decemberkitty02 3 in Chemistry

I'm making a model heart for my science class (Grade 8) and I have some clear acrylic/plastic tubing stuff (1/4") and I can't figure out how to get the water to flow through the tubing. I have a hand-pump so the air will force the water through it. I have some like 3 way "splitters" things (vacuum tees). But I'm still not sure how to get the water through it, I tried it like this (The thing in top right is a 3 way vacuum tee thing)
pump is here
_____-|| (periods are nothing
|............|
|_____|

Not a very good diagram but I dont have any other ways of showing it. I thought I could use a bulb pump or something to have the red coloured water to go through to tubing so it looks like blood. By the way all this is supposed to look like arteries or veins with blood going through the model heart.

2007-11-11 13:24:42 · 2 answers · asked by Anonymous in Engineering

Condensation? Evaporation? Sublimation? Melting?

2007-11-11 13:24:08 · 5 answers · asked by Anonymous in Weather

I remember in the early 80s reading something about a military version of the space shuttle..I think it was supposed to be black in color. After that I have never heard of it again..It was during the Reagan era...So those crazy people were spending billons on Star Wars missle defense and stuff like that, so I wouldn't put it past Reagan to blow billions on a secret shuttle.
I was just wondering has anyone else heard of it. If you know anything please let me know...

2007-11-11 13:22:40 · 6 answers · asked by Anonymous in Astronomy & Space

Anyone know the answer???

2007-11-11 13:18:53 · 7 answers · asked by Spirited Virgo 4 in Weather

What did go wrong with the russian sub which was never rescued?

2007-11-11 13:13:56 · 2 answers · asked by miga 2 in Engineering

me, my dad, and my two cousin we both have different type of ears then everybody else? my cousins are my dads brother daughter ans son. why my other cousin don't have ears like us and why my brother ears are not like us!

2007-11-11 13:10:57 · 11 answers · asked by ,,,,,,,,,,,,,,,,,, 1 in Biology

2007-11-11 13:10:32 · 3 answers · asked by Spirited Virgo 4 in Weather

I worked these multiple times and I keep getting the wrong answer.
1. A place kicker must kick a football from a point 31m from the goal. As a result of the kick, the ball must clear the crossbar, which is 3.05m high. When kicked the ball leaves the ground with a speed of 21.0 m/s at an angle of 59degrees to the horizontal. A) To determine if the ball clears the crossbar, what is its height with respect to the crossbar when it reaches the plane of the crossbar? B) To determine if the ball approaches the crossbar while still rising or while falling, what is its vertical velocity at the cross bar?
2. A daredevil is shot out of a cannon at 49.1degrees to the horizontal with an initial speed of 25.6m/s. A net is positioned at a horizontal distance of 32.3m from the cannon from which the daredevil is shot. At what height above the cannon's mouth should the net be placed in order to catch the daredevil?

2007-11-11 13:06:10 · 1 answers · asked by 5.8caloriewater 2 in Physics

I have the total population for each state and then the number of deaths per 100,000 for each state should I divide the population by 100,000 then multiply that answer by the deaths per 100,000 to get an answer i.e if the population of Texas is 22,968,248 should i divide that by 100,000 and then multiply that answer by 237.8 (number of deaths per hundred thousand due to heart disease)?

2007-11-11 13:05:48 · 1 answers · asked by Hello There 2 in Mathematics

PLease explain! but dont make it too confusing!

2007-11-11 13:00:40 · 7 answers · asked by Anonymous 2 in Mathematics

2007-11-11 13:00:03 · 2 answers · asked by Eric B 1 in Mathematics

a.y = x – 2
b.y = –2x
c.y = –2x
d.y = x – 2

Explain how you would get this as well.

2007-11-11 12:58:57 · 1 answers · asked by Anonymous in Mathematics

7x^2-84xy-196y^2 ? thanks very very much...

2007-11-11 12:56:45 · 1 answers · asked by xoxo_peridot05_xoxo 2 in Mathematics

2007-11-11 12:56:00 · 14 answers · asked by Jamie 1 in Astronomy & Space

thank you for helping ; )

2007-11-11 12:55:55 · 2 answers · asked by Anonymous in Chemistry

A. crayfish
B. sponge
C. sea anemone
D. earthworm

2007-11-11 12:54:58 · 2 answers · asked by Jennifer R 1 in Biology

An airplane pilot fell 350 m after jumping from an aircraft without his parachute opening. He landed in a snowbank, creating a crater 1.1 m deep, but survived with only minor injuries. Assuming the pilot's mass was 81 kg and his terminal velocity was 50 m/s. What is the work done on him by the air resistance as he fell?

2007-11-11 12:53:14 · 1 answers · asked by mkj 2 in Physics

doing a cell analogy project.

2007-11-11 12:52:44 · 2 answers · asked by rayray 1 in Biology

Approximate square root of 31 by giving the two whole numbers that it lies between.

2007-11-11 12:52:39 · 8 answers · asked by FURIOUS 1 in Astronomy & Space

San Diego, CA sunset was at 4:50PM on Sunday November 11th and in Ocala, FL it was 5:37PM.

2007-11-11 12:52:13 · 6 answers · asked by Florida 5708 4 in Weather

7x^2 - 35x + 42

?

2007-11-11 12:50:50 · 3 answers · asked by Anonymous in Mathematics

i think its nonpolar and thats why we need to mix it with water with dishwashing detergent so that the non polar dna can mix with polar water

and then we add ethanol to precipate the dna
but im not sure
soo is dna polar or nonpolar

2007-11-11 12:50:41 · 1 answers · asked by Bob W 1 in Biology

Using 10 dots make 5 lines with 4 dots in each line.


thanx

2007-11-11 12:48:02 · 8 answers · asked by jasmine♥ 2 in Mathematics

There are 7 girls on a bus.

Each girl has 7 backpacks.

In each backpack, there are 7 big cats.

For every big cat there are 7 little cats.

Question: How many legs are there in the bus?


Plz explain??!

2007-11-11 12:47:36 · 10 answers · asked by Anonymous in Mathematics