Science & Mathematics - 9 September 2007

2007-09-09 13:47:53 · 3 answers · asked by ^^**~~`Star^Dust`~**^^ 1 in Weather

please show work. the upperlimit is pi/2 and the lowerlimit is 0.
thanks

2007-09-09 13:47:51 · 1 answers · asked by Nik 1 in Mathematics

I have 2 actualy
1st: wich type of clothing absorbs the least electromagnetic radiation dark colored w/ rough surface orsmooth surface
white color with rough or smooth surface

2nd: What is the dew point tempature when the dry-bulb tempature is 12*C and the wet-bulb tempature is 4*C?
1)-9c
2)19*c
3) 8*c
4) 4*C

plz help on these

2007-09-09 13:47:41 · 1 answers · asked by izzy2imagine 2 in Earth Sciences & Geology

I found a torn apart nest with two eggs around it on the yard today one egg was cracked and covered in ants and the other was in great condition I am hoping to be able to incubate it till it hatches, how can I do the incubating?

2007-09-09 13:46:44 · 4 answers · asked by RP12' 3 in Zoology

2007-09-09 13:46:11 · 1 answers · asked by zingowner 2 in Biology

Please show work using trig. substitution.
-thanks

2007-09-09 13:44:57 · 2 answers · asked by Nik 1 in Mathematics

2007-09-09 13:43:36 · 8 answers · asked by said g 1 in Zoology

2007-09-09 13:40:57 · 1 answers · asked by roytia 1 in Engineering

the aztecs built large wooden rafts on which they placed soil and plants. the plants grew to the bottom of the lake. soil then naturally filled in the root system. thus creating land where there once was water.

2007-09-09 13:40:30 · 3 answers · asked by bareotteroutofwater 1 in Engineering

2007-09-09 13:40:04 · 4 answers · asked by Anonymous in Medicine

(cot x)+ √(3) = (csc x)

solve for x over [0, 2π).

the answer is x = (2π)/(3)
two pi over three

how do i get to the answer?



the problem spelled out:
cotangent of x, plus the square root of three, equals cosecant of x.
solve for x over zero(included) to two pi (excluded).

thank you if you can help..

2007-09-09 13:39:55 · 1 answers · asked by sab 1 in Mathematics

2007-09-09 13:39:55 · 10 answers · asked by brucebro 1 in Geography

we have this task from our teacher to design a container or some kind of device to protect a raw egg as it falls to the ground from the second storey of a building. the given materials are scotch tape, straws, and newspapers. you are allowed to use ONLY these materials. you CANNOT change the egg in any way (no tape on the egg, etc). please help me i'll give 10 points!!

2007-09-09 13:39:20 · 6 answers · asked by infernape 2 in Physics

2007-09-09 13:37:57 · 5 answers · asked by brucebro 1 in Geography

I have to put '2x-7=0' into y=mx+b form so I can graph it...But, I can't seem to get the right answer. How do you solve it when there isn't a y-intercept??

2007-09-09 13:36:56 · 2 answers · asked by Raina 3 in Mathematics

For the past few months, I've been followed by a rather eerie looking spirit. It is in the form of a white horse, but a dirty, skinny, sickly looking one. I get a really bad feeling every time right before I see it and the room gets cold. I hear its footsteps on the gravel in my garden often, and on the tile in my kitchen. It has followed me to the houses of friends before, and they too have seen it. In fact, one friend saw the spirit before me, and described it in perfect detail to me. I had never mentioned this spirit to him before.

I would like to know what I am dealing with here. I've been sensitive to paranormal activity all my life, and I have never gotten such a bad feeling from a spirit before.

2007-09-09 13:36:07 · 18 answers · asked by Anonymous in Paranormal Phenomena

1) Solve for y
log(3)y+3log(3) (y^2)=14

log(3) means log base 3

2) show that f(x) = (x-2)/(x+3) is invertible by finding its inverse.

(a) what is domain of f(x)? range of inverse?
(b) domain of inverse? range of f(x)?

2007-09-09 13:34:53 · 3 answers · asked by Harmlessly Roaming 1 in Mathematics

Substance A
73 percent oxygen
27 percent carbon

Substance B
57 percent oxygen
43 percent carbon

2007-09-09 13:33:24 · 3 answers · asked by Cuff 1 in Chemistry

is an engineer hard to be because i want to be one but i dont know if its hard

2007-09-09 13:32:37 · 16 answers · asked by DANIEL O 1 in Engineering

Does anybody know how to factor any of these problems?

5a^2+9a-2

25u^2-20u+4

6u^2+17u-10

And how do you solve them?

2007-09-09 13:31:15 · 6 answers · asked by Anonymous in Mathematics

A 1.3-kg object is moving in the x direction at 15 m/s. Just 3.35 s later, it is moving at 28.2 m/s at 32.4° to the x axis. What are the magnitude and direction of the force applied during this time?

2007-09-09 13:31:04 · 2 answers · asked by Nathan R 1 in Physics

Please show your work so I can understand how you did it!

Directions:Solve the nonlinear inequality. Express the solution using interval notation. (If you need to use - or , enter -INFINITY or INFINITY.)

(3)/(x-1) - 4/x greater than or equal to 1

2007-09-09 13:29:27 · 2 answers · asked by Anonymous in Mathematics

2007-09-09 13:25:49 · 3 answers · asked by Anonymous in Earth Sciences & Geology

please, i know this is a simple question but i need help,

the sum of two numbers is 141. one number is 37 more than the other . find the numbers.

the other questions is

find two numbers whose sum if 54 and whose difference is 28.

please help me figure the problems, and explain how to do it, thanks

2007-09-09 13:25:31 · 6 answers · asked by Anonymous in Mathematics

errr
is there alot of humidity in winter.?

2007-09-09 13:22:55 · 8 answers · asked by Mark G 1 in Weather

2007-09-09 13:22:34 · 6 answers · asked by animalhouser07 2 in Mathematics

We have a building where services, meeting, etc... are held. There are 95 individual lights and 6 florescents, controlled on 14 different switches. The average number of lights for each switch is approximately 7. The most being 14, least is 4.

The 6 florescents are only on 2 switches at the moment. The first has 14 lights and 1 florescent. The second has 6 lights and 5 florescents.

How can I group all the lights together so I can turn them off/on using only one dimmer switch, without tripping any circuit breaker?

Thanks,
Christopher

p.s. It would also be nice if I could still use those 14 switches or at least group them together. (i.e. stage left/right, audience left/right, media room). Media room has the flourescents.

2007-09-09 13:22:28 · 2 answers · asked by MEMtiger 2 in Engineering

is it true about the tidal wive that happened in Tyland or somewhere close to there. well did the U.S know but couldn't contact them or did they know and didn't tell their people?

2007-09-09 13:21:24 · 3 answers · asked by Mikki Mixx.[morgan.] 5 in Weather

Sorry. Earlier question did not provide sufficient detail. "Northeast" is not close enough.

2007-09-09 13:20:40 · 3 answers · asked by bradvines2 1 in Geography

the sides of a rectangle are in the ratio 3:2. what is the length of each side if the perimeter of the rectangle is 55cm?

2007-09-09 13:19:29 · 8 answers · asked by Anonymous in Mathematics