Science & Mathematics - 29 August 2007

The arm of the catapult is R=10ft long,
http://www.knightsedge.com/medieval-weapons/medieval-catapult-4804.jpg
and starting from initial horizontal position it acclerates projectile at the rate s=100 rad/s².
The crew can regulate the angle at which projectile is relesead.

g = 32 ft/s², no air resistance

2007-08-29 08:58:33 · 8 answers · asked by Alexander 6 in Physics

2007-08-29 08:57:20 · 13 answers · asked by xjohnson_2011x 1 in Mathematics

what makes some thing be electricly conductive? I meen whats the difrentce from wood, glass, rubber, and mettals? Is it the amount of mass in each object that makes it conduct electricaty? Whats the science behind it all

2007-08-29 08:51:37 · 2 answers · asked by not shure 1 in Other - Science

A machine is used to fill each of several bags with 16 ounces of sugar. After the bags are filled, another machine weighs them. If the bag weighs .3 ounces more or less than the desired weight, the bag is rejected. Write this equation to find the heaviest and lightest bag the machine will approve

I know the answer is 15.7, and 16.3, but the equation?

2007-08-29 08:50:40 · 5 answers · asked by Anonymous in Mathematics

Our galaxy rotes every 230,000,000 years if black holes are as dense as we believe and of unimaginable weight could the gravitational forces which rotate the galaxy be strong enough to pull any black holes with it?

2007-08-29 08:48:50 · 9 answers · asked by paul j 2 in Astronomy & Space

2007-08-29 08:47:13 · 6 answers · asked by maciasas 0 1 in Zoology

The setup: the bracket is a right triangle mounted perpendicular to a wall so that one leg (AB) is against the wall, one leg (BC) extends out from wall (these form 90degree angle) and hypotenuse (CA) is in compression (extending down and back to the bottom of leg AB) when a downward point load (1000lb.) is applied to point C. Points A and B are fixed to the wall with mechanical connectors. Legs AB and BC are equal length (2 feet). Assume frame and connectors are of adequate strength. Questions: What is the required shear strength of connectors at A and B? What is the pullout resistance or tension on connector at B? What is the compressive force on member BC?

2007-08-29 08:42:29 · 2 answers · asked by john s 1 in Engineering

2007-08-29 08:41:37 · 8 answers · asked by Anonymous in Botany

2007-08-29 08:41:33 · 6 answers · asked by porcha b 1 in Mathematics

can u guess the 3 numbers to comes next in this number sequence? also write a rule for the given sequence.

example :
Q. - 12, 10, 8, 6, __, __, __,
A. - 12, 10, 8, 6, 4, 2, 0
rule : n - 2

THE REAL THING -

Q. - 16, 24, 28, 32, __, __, __,
A. -
rule :


Q. - 1, 4, 9, 16, __, __, __,
A. -
rule :

2007-08-29 08:39:56 · 6 answers · asked by Anonymous in Mathematics

2007-08-29 08:39:46 · 2 answers · asked by Anonymous in Chemistry

2007-08-29 08:38:58 · 6 answers · asked by Shanay 3 in Mathematics

Hey guys I'm working on my calc work and I have a basic question, I completely forgot this.

When you have [0,4) or [0,x) or whatever... What does the [ and ( mean... what's the difference between those?

2007-08-29 08:35:54 · 2 answers · asked by joedudez 3 in Mathematics

what are all the possible ways that 70 can be the sum of two prime numbers??

2007-08-29 08:32:59 · 3 answers · asked by Anonymous in Mathematics

?

2007-08-29 08:27:14 · 16 answers · asked by dara_light92 1 in Astronomy & Space

2007-08-29 08:22:52 · 6 answers · asked by Anonymous in Mathematics

2007-08-29 08:20:56 · 7 answers · asked by bricky 1 in Astronomy & Space

I need help with the following two questions:

1: y=2x-8
4x+3y=1

2. y=x-5
3x-4(y-2)=28-x

Thanks in advance for the help!

2007-08-29 08:20:54 · 5 answers · asked by Pete 1 in Mathematics

2007-08-29 08:18:07 · 15 answers · asked by Spades 1 in Astronomy & Space

what is radical 3x times radical 3x?

ill try to show what this looks like:

(3x) X (3x)

the parantheses are the radical signs and the big X in the middle is the multiplication sign

2007-08-29 08:12:19 · 10 answers · asked by questionr/answrr 2 in Mathematics

the idea needs to be turned in by sept 3

2007-08-29 08:12:15 · 3 answers · asked by Bianca I 1 in Medicine

CLICKhttp://metaluna.miniville.fr/

2007-08-29 08:11:42 · 4 answers · asked by Anonymous in Astronomy & Space

- what is negative radical x times negative radical x?

- there's no radical sign on the computer so i'll try to show u what this looks like:

-(x) X -(x)

just imagine the parantheses r the radical signs and the big X in the middle is a multiplication sign = D

2007-08-29 08:09:19 · 4 answers · asked by questionr/answrr 2 in Mathematics

The degree measures of the angles of a pentagon are consecutive even integers. find the measure of the largest angle

step by step help please i need to understand this

2007-08-29 08:08:17 · 4 answers · asked by Soran 4 in Mathematics

Jims weekly pay is two thirds of Alicias. Together they earn $600 per week. What is each persons weekly pay?

Step by step please im lost with it my teacher said something about the reciprocal(sp) to someone else this is as far as i got to solving it

600=2/3X+X

2007-08-29 08:06:46 · 6 answers · asked by Soran 4 in Mathematics

Solve for y in -3x - 4y= -3

Part 2) Determine if the line is parallel to y = -1/2x + 2

2007-08-29 08:06:27 · 6 answers · asked by Anonymous in Mathematics

My teecher said i was dumb and wast of space cuz i culdn't build 1.

2007-08-29 08:03:26 · 3 answers · asked by Anonymous in Engineering

2007-08-29 08:03:21 · 7 answers · asked by Anonymous in Geography

What's the point? Seems like a lot of good money to go to schools, medical, & other more important things. Do you guys a gree or disagree.

2007-08-29 07:59:13 · 13 answers · asked by mastermind delinquent 5 in Astronomy & Space

is it inevitable that everything will one day burn out and stop just like it started.Everything will eventually burn out and break down into the gases it used to form all.I remember hearing a theory that in the end of it all you will have the basic gases just like how it started but without the elements or gases to pro create so each element will break down until there is nothing.Any theory's?

2007-08-29 07:58:27 · 3 answers · asked by Equal Animal 5 in Astronomy & Space