Science & Mathematics - 22 October 2007

2007-10-22 04:29:39 · 5 answers · asked by heatherhansen87 1 in Botany

I have a parallelogram with horizontal side = 100, and vertical side = 150. Is there any way to determine the height?

2007-10-22 04:28:09 · 3 answers · asked by Rob J 1 in Mathematics

Consider series of squares 1, 4, 9, 16, 25... The differences are 3, 5, 7, 9... which leads to differences of 2, 2, 2, 2... = 2! The series of cubes 1, 8, 27, 64, 125... similiarly ends up with 6, 6, 6, 6 ... = 3! Etc. It always ends up with n!, n!, n!,.... where n is the power of the original series.

2007-10-22 04:26:05 · 2 answers · asked by Scythian1950 7 in Mathematics

2007-10-22 04:25:04 · 7 answers · asked by terriann m 1 in Biology

2007-10-22 04:23:47 · 4 answers · asked by Flamezz 5 in Mathematics

If the global warming predictions are correct, water will be a vast problem and a resource for the world. Like when you get lemons, make lemonade. This might sound stupid but with all the trillions of dollars spent on wars and space exploration shouldn't we start doing some research on pumping the water maybe through pipelines or take out the salt. Use it on dry parched regions of the world. How could it be done? Any ideas?

2007-10-22 04:22:46 · 18 answers · asked by Enigma 6 in Earth Sciences & Geology

a. being significantly closer to the stars.

b. having a baseline less than 2 AU.

c. having a baseline greater than 2AU.

d. having an orbital period less than one Earth year.

2007-10-22 04:20:58 · 4 answers · asked by Jacquisha R 1 in Astronomy & Space

im doiin math homework
and im doiin combinations

and theres this one problem c[9,2]

i got 1/560


buhh i dont kno
wut u thiink?

thanks babe

2007-10-22 04:19:21 · 2 answers · asked by cutejaz18 1 in Mathematics

okay, i have a block on a ramp 34 degrees above the horizontal, of mass 20kg. the ramp and block have a kinetic friction coefficient of 0.44.
the block initially has a velocity of 4.6ms-1 up the ramp.

i need to work out the work done on the block as it slides up to its highest point on the ramp.
i can say that the velocity at its highest point is 0 ms-1.

i have got a diagram drawn of the block on the ramp
mg drawn straight down from the block
mg sin x drawn down the slope
mg cos x drawn at a right angle to the slope

so apart from friction, these would be all the forces i need to consider if the block was just released to slide down the slope.
BUT, it is moving up the slope with that initial velocity.

so could somebody show me how i would go about finding the net force here?
my thoughts are that i have to somehow find out how far the block reaches up the slope before it can go no further, but i dont know how to do this.

a little explanation please? thanks.

2007-10-22 04:15:34 · 2 answers · asked by fpa06mr 5 in Physics

2007-10-22 04:15:33 · 5 answers · asked by Anonymous in Mathematics

Everyone knows that chickens lay eggs which hatch and become chickens but I have never heard of how a rooster is created. Does anyone know? Is it cross-breeding like a mule (horse and donkey) or do some of the chicken eggs contain roosters instead of chickens?

2007-10-22 04:11:11 · 8 answers · asked by Mr. Nobody 5 in Zoology

2007-10-22 04:09:35 · 6 answers · asked by Flamezz 5 in Mathematics

2007-10-22 04:08:47 · 2 answers · asked by jon b 1 in Mathematics

I was in hospital once and given 'Cyclizine' for nausea. It made me what I can only describe as "hyper-aroused". For example, when somebody came around the corner to see me, it was like having an electric current put through my body! A real startled feeling. I also have it with Prochloperazine (Stemetil™), and the anti-depressant Mirtazapine (Remeron™) which I have recently been prescribed. I'd like to know what is causing this? I only get it with medications that have anti-histamine properties though. It's getting to the point now that somebody has only got to call my name from behind me, and I jump out of the chair as an involuntary reaction.

2007-10-22 04:07:15 · 6 answers · asked by Seo 1 in Medicine

2007-10-22 04:05:15 · 5 answers · asked by Flamezz 5 in Mathematics

2007-10-22 04:03:50 · 2 answers · asked by mr cheese 3 in Mathematics

2007-10-22 04:01:00 · 6 answers · asked by trice20019 2 in Mathematics

2007-10-22 03:57:48 · 7 answers · asked by Delhiwood 1 in Geography

2007-10-22 03:57:18 · 5 answers · asked by Anonymous in Physics

Scientist

2007-10-22 03:56:55 · 8 answers · asked by sammie 1 in Engineering

Minimizing cost- A company uses the formula c(x)= 0.02x-3.4x+150 to model the unit cost in dollars for producing x stabilizer bars. For what number of bars is the unit cost at its minimum? What is the unit cost at that level of production?

I have no clue, someone please help me thankyou

2007-10-22 03:48:44 · 6 answers · asked by mormar 1 in Mathematics

Turson

2007-10-22 03:48:31 · 13 answers · asked by sammie 1 in Earth Sciences & Geology

hw far has world popullation incresed?and wht is theri percentage of increasing.including (birth & death rate).how i has been increasing every day,month,or year......
PLz help me out.

2007-10-22 03:45:27 · 4 answers · asked by Anonymous in Geography

and how many grams of HCL are formed?

I cant figure out how to set up the problem.

2007-10-22 03:42:22 · 5 answers · asked by cdf0 1 in Chemistry

(I'm asking this question for my daughter)

2007-10-22 03:37:41 · 3 answers · asked by metanoia 3 in Engineering

What was the initial temperature of ethylene glycol if the final temperature is 32.5°C (c of ethylene glycol = 2.42 J/g·K)?

2007-10-22 03:34:46 · 2 answers · asked by Anonymous in Chemistry

A bag contains 3 blue, 4 red, and 2 green marbles. What is the probability of selecting one green marble from the bag?

2007-10-22 03:33:57 · 7 answers · asked by Sweet*Angel 3 in Mathematics

2007-10-22 03:29:27 · 2 answers · asked by Dom 1 in Other - Science

Probably it is the lack of water, since human can last a few days without food but aproximately two without water, but what exactly? I was wondering what is the exact reason of death. All biologists are very welcome to answer talking biological.

I watched this movie about these dudes that didn't make it through the desert, what a gruesome death. It got me wondering.

Hit me

2007-10-22 03:28:19 · 5 answers · asked by Kirk's Level 3 Alter Ego 4 in Biology

just wondering..... what if they took motion sickness pills before training or take off?

2007-10-22 03:20:13 · 8 answers · asked by Ms Medieval 7 in Astronomy & Space