Science & Mathematics - 20 December 2007

I need to build a projectile launcher for class.

I do not want to do it but am trying

I have to fling a golf ball, which is about 1.62 ounces or 45.93 g.

the catapult or trebuchet has to be under 50x50 cm

and it has to fling it a distance of at least 12 meters

anyone have any help?

I've been trying to use the internet but.. beh

2007-12-20 17:30:22 · 2 answers · asked by Rachelll 2 in Physics

At least for me i dont think it normal and i do not know if that makes me a freak or something if anybody knows somwthing about it tell me i need answers (if you think this is a joke then your losing your time) unless you can help ill be greatful

2007-12-20 17:25:53 · 12 answers · asked by mychemicalgreen182 1 in Biology

I seriously don't understand this problem. The teacher didn't even teach us this and my notes in Algebra aren't helping either. I need an explanation to how it is solved, not just the answer...

2007-12-20 17:22:05 · 4 answers · asked by Anonymous in Mathematics

I keep looking to see if anyone found what they lost..but no one tells us! Hopefully, in the future ..you'll let us know. We don't "charge" for trying to help. It would just be nice to know if you found the thing we were trying to help you find.Thanks.

2007-12-20 17:21:58 · 6 answers · asked by Deenie 6 in Paranormal Phenomena

2007-12-20 17:21:35 · 3 answers · asked by SakuraPink 1 in Other - Science

plz help me to figure this one out

2007-12-20 17:13:47 · 5 answers · asked by tracy 1 in Mathematics

2007-12-20 17:13:44 · 1 answers · asked by exile_india 1 in Physics

....that ...They can extract metal from ore. Metallurgical procedure are not very easy. What helped them distinguish that some minerals are ore and some are stones.
We find ores deep down the surface. By no means ancient people could have dug so deep. How did they got knowledge that iron can be extracted from hematite. Similarly copper, bronze from their ores etc.etc.
Were they damm genius gifted with mind blowing intuitive powers or god appeared in there dreams saying ' O man goeth there, diggeth it, melteth it in absence of air and geteth iron'.
How did it popped in their brain that ores can give them metal.
Thank you for your time.

2007-12-20 17:03:47 · 3 answers · asked by Fantail Flycatcher 3 in Chemistry

A case of a 60 year old male , with a body weight of 17.9 kg/m2 , brought in the emergency room for shortness of breath.
The patient is a known smoker for 30 pack years. He occasionally drinks. He is a known hypertensive and has congestive heart failure. He is already on maintenance medications for hypertension for 10 years. He claims to have a lung problem but could not recall the diagnosis, but is currently taking a combination of inhaled long acting bronchodilators and steroids. He is already a retired public transportation driver.
His condition started around 4 days prior to admission as cough which was productive with whitish sputum. There was no associated fever. Patient just took in some cough medications which afforded only temporary relief.
3 days prior to admission noted to have body malaise this time associated with slight shortness of breath, tried having some nebulizations at a local clinic which afforded only slight relief, thus continued having it every 4 hours.
2 days prior to admission condition still persisted thus decided to seek consult with a doctor in their locality, was given some antibiotics, cough medications and was told to continue his nebulization.
On the day of admission, noted his shortness of breath to increase in severity despite of the nebulizations, thus decided to be brought in the emergency room at a hospital in their locality.

On Physical examination, patient was examined to be in distress:
BP: 110/80 mm Hg
HR-120 beats/min
RR: 28 cycles /min
T: 36.9 C


Skin: cold with clammy sweats,
Neck: prominent sternocleidomastoid muscles, no lymphadenopathy, (+) neck vein engorgement,
HEENT: non icteric, pinkish palpebral conjunctiva, no tonsillophryngeal congestion, uvula in the middle, tonsils not enlarged,
Chest/Lungs: no deformities, barrel chested, no scars,

On physical examination, Mr. Winstone was found to have a body mass index of 27.9, his blood pressure was 133/90, pulse was 110, respiratory rate was 14, and his oxygen saturation was 88% on room air. The results of his head and neck exam were unremarkable, with no jugular venous distension noted. His chest excursions were symmetric with evidence of hyperinflation. Mr. Winstone's breath sounds were decreased throughout, and the expiratory phase was prolonged. His heart exam was notable for distant but otherwise normal heart sounds. The abdominal exam was unremarkable. There was no clubbing of his digits noted, but there was mild cyanosis and peripheral edema. His neurologic exam was nonfocal. Arterial blood gas drawn on room air revealed a pH of 7.39, PaO2 of 53, and PaCO2 of 44.
His pulmonary function results before bronchodilators (% predicted) were forced expiratory volume in 1 second (FEV1): 1.25 L (41%), forced vital capacity (FVC): 2.53 L (60%), and FEV1/FVC: 49. Post bronchodilator, his results were: FEV1: 1.29 L (42%) and FVC: 2.64 L (62%). His residual volume was 6.74 L (329%), total lung capacity: 9.45 L (150%) and his diffusing capacity was 6.96 L (25%).
Questions:
1. What is your impression?
2. Give at least 5 differential diagnosis?
3. What is your management?

2007-12-20 17:03:13 · 5 answers · asked by Mike 3 in Medicine

For the twin Towers of the world trade center to collapse on itself in such a short space of time. After all,the heat was only at the top

2007-12-20 17:00:36 · 4 answers · asked by ? 4 in Engineering

2007-12-20 16:58:06 · 5 answers · asked by bjpower918 1 in Engineering

2007-12-20 16:52:26 · 7 answers · asked by Anonymous in Mathematics

I hope I have spelt It correctly.

2007-12-20 16:51:41 · 1 answers · asked by Tony S 1 in Physics

Would you have somebodies DNA if you were to drank their spit or touch their blood even though it is clean with no disease and if you were to have kids would the kids have the other persons DNA??

2007-12-20 16:47:36 · 5 answers · asked by ? 2 in Biology

sometime in 2012?

2007-12-20 16:47:31 · 9 answers · asked by ANyone but you 2 in Astronomy & Space

f(x) = x^2 - 2x + 1
g(x) = x^3 - 3x^2 + 2

find the inflection points
i know the answers but i dont know how to do the procedure
i remember you have to multiply exponents or something
can someone fully explain it to me, step by step ?

2007-12-20 16:43:51 · 4 answers · asked by Anonymous in Mathematics

Hi everyone, I need help with a trig identify problem
http://img180.imageshack.us/img180/6640/70077949cj0.jpg
steps would be greatly appreciated =) thanks

2007-12-20 16:32:49 · 3 answers · asked by PPan 2 in Mathematics

some one had told me that if you smoke marijuana seeds, you become sterile... is this true? or am i being messed with?

2007-12-20 16:18:44 · 5 answers · asked by Anonymous in Medicine

How many ways are there to put n balls into r boxes if:

1) Both the balls and the boxes are distinct
2) The boxes are distinct but the balls are not distinct
3) The balls are distinct but the boxes are not distinct
4) Neither the balls nor the boxes are distinct

2007-12-20 16:14:11 · 3 answers · asked by Northstar 7 in Mathematics

i want to know if it will help with my acne (thats what my doctor originally prescribed them for, im not sexually active yet)

im on diane 35 (on the box it says 35 mcg ethinyl estradiol and 2 mg cyproterone acetate)

thanks

2007-12-20 16:11:50 · 5 answers · asked by Anonymous in Medicine

2007-12-20 16:09:34 · 12 answers · asked by anica_808 2 in Physics

I think I would always "think" in my native tongue.(which is Pig Latin , of course.)

2007-12-20 16:07:08 · 9 answers · asked by Deenie 6 in Parapsychology

I just read Yahoo's version of the meteor that may hit Mars.

http://news.yahoo.com/s/ap/20071221/ap_on_sc/mars_asteroid

In the article, it says, "Scientists tracking the asteroid, currently halfway between Earth and Mars..." - Halfway between Earth and Mars? How do they know it won't hit Earth, then?

2007-12-20 15:58:22 · 9 answers · asked by Anonymous in Astronomy & Space

2007-12-20 15:57:26 · 3 answers · asked by Fallen Angel 2 in Parapsychology

say u put viagra in a drink or something and someone drinks it will it still work

2007-12-20 15:56:44 · 5 answers · asked by landryfoo 1 in Medicine

My Biology teacher obviously uses scientific words and such and I'm completely lost. I'm not dumb I just need Enzymes explained in an easier format....

2007-12-20 15:55:05 · 5 answers · asked by 71MalkinsMilitia71 3 in Biology

2007-12-20 15:53:58 · 3 answers · asked by bharath 1 in Engineering

if you have seen Mission Impossible three, can you please tell me about the scene where tom cruise sticks the bad guy's head out of the plane? i need to know for a science project if the man could actually live after have so much air pressure on his face. thanx. (give detailed answers please)

2007-12-20 15:44:17 · 2 answers · asked by AmyBaby 2 in Physics

According to the song, on the 1st day you get a partridge in a pear tree. On day 2, you get 2 turtle doves AND a partridge in a pear tree, thus now having 2 turtle doves and TWO partridges. So at the end of the 12th day, how many of each would you have?

2007-12-20 15:43:21 · 7 answers · asked by Joe M 3 in Mathematics

I would appreciate someone explaining the steps needed to solve this so I can do it myself. I don't just want an answer. Thanks.

A clean burning engine will emit about 5.5 lbs of carbon in the form of CO2 for every gallon of gas it consumes. Illistrate this statement to be mathmatically correct by using the following information:
a) one of the main components of gasoline is octane (C8H18) with a density of 0.692 g/mL. 1.00 gallon has the same volume as 3,790.00 ml. 454.00 grams = 1.00 lb.
b) another component of gasoline is toluene (C7H8) with a density of 0.867 g/mL.

2007-12-20 15:36:47 · 3 answers · asked by Anonymous in Chemistry