Science & Mathematics - 7 October 2007

y= 4x + 10

2007-10-07 18:44:19 · 6 answers · asked by Flo 1 in Mathematics

a balloonist is directly above a straight road 1.5mi long that joins two villages. She finds that the town closer to her is at an of depression of 35 degrees and the farther town is at an angle of depression of 31 degrees.

2007-10-07 18:43:54 · 4 answers · asked by designsbyarias 1 in Mathematics

2007-10-07 18:40:38 · 4 answers · asked by Anonymous in Zoology

A worker is raising a 9.2 meter long ladder of mass 53 kg as shown. Knowing that the force exerted by the worker is perpendicular to the ladder determine
(a) the smallest value of 'a' for which the vertical component of the reaction at B is zero
(b) the corresponding force exerted by the worker

Diagram:
http://i231.photobucket.com/albums/ee84/janise87/72.jpg

2007-10-07 18:39:14 · 1 answers · asked by Anonymous in Engineering

0, 1, 3, 7, x, 31

What is x?

THANK YOU!

2007-10-07 18:35:17 · 6 answers · asked by Anonymous in Mathematics

How many pounds of pressure does it take to break a human bone? In more detail, the thickest bone we have, how may pounds of pressure? Is it possible for a human to actually bite through a human bone?


Please, i need some concrete answer and if possible proofs or links to websites.

2007-10-07 18:33:12 · 3 answers · asked by Efra 1 in Biology

2007-10-07 18:27:50 · 4 answers · asked by Anonymous in Chemistry

2007-10-07 18:27:16 · 3 answers · asked by vok 1 in Botany

2007-10-07 18:23:06 · 5 answers · asked by marik 1 in Mathematics

2007-10-07 18:18:44 · 1 answers · asked by Anonymous in Biology

hey guys...
i am aminah...

can you help me with my problem?

here it goes...

FIND THE TIME TO EMPTY A CYLINDRICAL TANK, AXIS VERTICAL, RADIUS 1/2 FT., HEIGHT 1.25 M, INITIALLY FULL OF WATER,THROUGH AN ORIFICE 1/50 FT. IN DIAMETER IN ITS BOTTOM....

hope you can find a marvelous solution to my problem...

thanks in advance....

2007-10-07 18:15:25 · 4 answers · asked by Anonymous in Mathematics

2007-10-07 18:14:46 · 2 answers · asked by stewart t 5 in Zoology

2007-10-07 18:10:22 · 4 answers · asked by Ian S 1 in Mathematics

Is it possible to build a load bearing glass wall?

2007-10-07 18:10:09 · 5 answers · asked by Young 1 in Engineering

Write the equation of a circle with endpoints of the diameter at (2, -5) and (-4, 3).
Show your work

2007-10-07 17:56:54 · 3 answers · asked by Anonymous in Mathematics

The equilibrium constant for the reaction:

H2 + I2 = 2HI

has a value of 50.0 at 745K.

When 1 mol I2 and 3 mol H2 are allowed to come to equilibrium at 745K in a flask of volume 10L, what amount in moles of HI will be produced?

2007-10-07 17:46:25 · 2 answers · asked by Peter G 3 in Chemistry

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Picture8.png

2007-10-07 17:42:55 · 2 answers · asked by Anonymous in Mathematics

2007-10-07 17:39:39 · 3 answers · asked by nancy c 1 in Physics

* Both the earth and moonaret thought to have formed with simular internal temperatures about 4.6 billion yrs ago. Both world gradually lose this internal heat to space as the heat passes out throughtheir surfaces*

Question. The diameter of the earth is about four times the diameter of the moon. How does the surface area to volume ratio of the earth compare to that of the moon?


Please explain, I don't know how to do this problem.

2007-10-07 17:37:55 · 3 answers · asked by cassie05 3 in Mathematics

(survey to see how many would know this)

2007-10-07 17:37:46 · 2 answers · asked by Anonymous in Mathematics

2007-10-07 17:36:42 · 3 answers · asked by Jamanski 3 in Mathematics

Identify the center and the radius of the circle with equation (x - 6)2 + y2 = 49.

center (0, -6) and radius = 7

center (0, 6) and radius = 49

center (-6, 0) and radius = 7

center (6, 0) and radius = 7

2007-10-07 17:32:56 · 2 answers · asked by Anonymous in Mathematics

The Dna makes a copy. How does the Rna know. something has to control this. I know stupid people cant form a large human so is Dna smart. What makes them move to form a human cause lets be real.....its a hard process to do. what is a chemical, is it life, or more like a robot.

2007-10-07 17:31:28 · 5 answers · asked by Anonymous in Biology

What is the Lowest Percent for Isopropyl Alcohol? I know that there is a 99% and a 70% and a 50%, but I want to know if there is any percentage that is lower than 50%.

2007-10-07 17:24:57 · 4 answers · asked by darklinkredlink 2 in Chemistry

2007-10-07 17:22:14 · 15 answers · asked by Royal 4 in Zoology

2007-10-07 17:19:52 · 7 answers · asked by Royal 4 in Chemistry

I have the math problem 750 divided by 175. The answer is 4.28 ect ect ect ect.

2007-10-07 17:17:51 · 4 answers · asked by Anonymous in Mathematics

Just a silly question but it interests me.

If I was to lay under an X - Ray machine set up for a chest X - Ray, and it was turned on and left on continuiously so I had X- Rays pumping through me all the time, how long would it be until I began to feel something - would it get warm?? How long would it take me to die and get a lethal dose?

2007-10-07 17:16:40 · 5 answers · asked by lucylonglegs 1 in Physics

Suppose each edge of the cube is x cm long. Find the Sin and Cos of the diagonals formed by CF and CH.

Picture at http://pic90.picturetrail.com/VOL2297/9985690/18013441/282239262.jpg

2007-10-07 17:16:20 · 2 answers · asked by Princess 2 in Mathematics

2007-10-07 17:11:20 · 1 answers · asked by Anonymous in Biology