Science & Mathematics - 30 January 2007

Plzplzplzplzplzplzplzplzplz help me out with this question, and if you can get an answer leave it a a highschooler's level of science... here it its... How could you find the volume of a student? Describe your invented technique.

2007-01-30 11:43:17 · 3 answers · asked by .. 2 in Other - Science

2007-01-30 11:41:15 · 8 answers · asked by JiveSly 4 in Mathematics

Which container has the greater number of atoms if there are two containers with an equal number of moles of helium and hydrogen gases?

Also, what is the ratio of the average kinetic energies of hydrogen and helium at the same temperature?

2007-01-30 11:40:27 · 5 answers · asked by Anonymous in Chemistry

like my friend and i are arguing becuz she says they are equal and i say 6/6 is larger

2007-01-30 11:39:34 · 8 answers · asked by chanelakamunchie 1 in Mathematics

If C->(please imagine thats an arrow on top of the C indicating its a vector) is the vector sum of A-> and B->,C->=A-> + B->, what must be true if C=A + B? What must be true if C=0?


Im having some trouble wrapping my head around these kinds of problems, I'm not even quite sure where to start :(

2007-01-30 11:39:18 · 7 answers · asked by 11 2 in Physics

ok i have this fraction 1/3 now im juss learning this and i have to change that into a decimal how do i do that????HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

2007-01-30 11:38:59 · 7 answers · asked by Kels(: 1 in Mathematics

of the collision?

2007-01-30 11:38:51 · 4 answers · asked by sunshine! 1 in Physics

I was just watching the Science channel and thought I would see what other people think about these theories.

2007-01-30 11:37:05 · 5 answers · asked by Lisa S 1 in Astronomy & Space

eh help

2007-01-30 11:36:42 · 2 answers · asked by Grace B 1 in Physics

A 10.0 m tall open water tank has a nozzle 2.0 meters from it's bottom. The nozzle has a cross sectional area of 0.016 meters squared. What is the rate of discharge from the nozzle, assuming that the water has no kinetic energy in the tank?

2007-01-30 11:34:59 · 1 answers · asked by jsprplc2006 4 in Physics

2007-01-30 11:33:29 · 8 answers · asked by sakinah_123 1 in Earth Sciences & Geology

2007-01-30 11:33:26 · 3 answers · asked by cool as ICE :] 2 in Weather

rain lamp oil

2007-01-30 11:32:51 · 3 answers · asked by samziggymeyer 2 in Earth Sciences & Geology

2007-01-30 11:32:39 · 4 answers · asked by Mets 1 in Biology

I dropped an old thermometer and I thought I saw little silver pieces of glass so I went to pick them up but then I realized it was mercury! I washed my hands and vacummed up all the mercury I could see, its on carpet though. What should I do?

2007-01-30 11:31:59 · 65 answers · asked by Anonymous in Other - Science

Accroding to Newton's law of interaction, for every force you exert on an object , the object also exerts an eqaul but opposite force on you. Will it be possible for you to accelerate the object in view of this equal and opposite forces?

2007-01-30 11:31:29 · 4 answers · asked by sunshine! 1 in Physics

I know the answer can vary depending on the type of gun and bullet you use but on average how far does it travel (let's assume a 92f 9mm). Also, once you shoot the bullet and it travels up towards the skies it eventually loses momentum and then falls to the ground, isnt it so? So if this happens when the bullet falls back to the ground the momentum and speed can also be just as detrimental to be fatal if it lands on someone's head, am I right?

If someone can shed light on this that would be great.

Thanks!

2007-01-30 11:31:15 · 4 answers · asked by Truth 2 in Physics

It had thorns on the vine, and something that looks like a cherry at the end of it, with leaves coming off of it. It was the only one alive in the bunch, all of the others were dead. anyone know what this is?

2007-01-30 11:30:57 · 6 answers · asked by aefhskjrfhskjghskjrghw289utghwsr 2 in Botany

2007-01-30 11:30:46 · 12 answers · asked by ? 2 in Mathematics

Its cold its wet and it makes you fall over! Yuk!

2007-01-30 11:29:38 · 52 answers · asked by ? 6 in Weather

I don't fully understand how it's possible to work this problem with so little information. I would like some steps to solving this. Thanks in advance.

In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 27 000 V. The speeds of the electrons are quite large, and for accurate calculations of the speeds, the effects of special relativity must be taken into account. Ignoring such effects, find the electron speed just before the electron strikes the screen.

2007-01-30 11:27:59 · 2 answers · asked by blah 1 in Physics

it would make perfect sense, but I just want to make sure.

2007-01-30 11:27:34 · 4 answers · asked by lolnicequestion 3 in Earth Sciences & Geology

2007-01-30 11:27:27 · 1 answers · asked by Anonymous in Zoology

What would (x^3 -27) look like when its factored *the 27 is negative. Its hard to see so i thought id just mention it. Thank you!

2007-01-30 11:27:19 · 2 answers · asked by Anonymous in Mathematics

How many people do you need in a room in order for the probability to be more than 50% that two of them share the same birthday?

same month, same date... dont worry about year!

2007-01-30 11:27:00 · 4 answers · asked by Abdul S 3 in Mathematics

buoyancy force.. time to take submerge objects to the surface

2007-01-30 11:24:24 · 3 answers · asked by Erick 1 in Physics

2007-01-30 11:23:36 · 3 answers · asked by Anonymous in Mathematics

2007-01-30 11:23:21 · 2 answers · asked by ssjtrunks879 4 in Mathematics

Al Gore is a fool and his "science" is flawed. And he's going to the Oscar's??? Laughable!! I don't doubt there are changes happening in our climate but it's not because I drive an SUV. Over the millenia, the ice caps have melted and frozen again many, many times. Core samples from polar ice prove that. Weather patterns change constantly and have done so for eons. Read it in the rocks. But Gore shows an iceberg calving off and people run for the hills. C'mon!! Here's 2 new books for you: The Chilling Stars: A New Theory of Climate Change, by Danish physicist Henrik Svensmark and former BBC science writer Nigel Calder (Icon Books) and Unstoppable Global Warming Every 1500 Years, by physicist Fred Singer and economist Dennis Avery. Unstoppable Global Warming documents the reality of a moderate, natural, 1500-year climate cycle on the earth. The Chilling Stars explains the why and how. I recycle and do everything I can to conserve energy. I just don't buy the phony hype.

2007-01-30 11:23:06 · 12 answers · asked by No Hillary 1 in Weather

In the first part of the movie "Pirates of the Caribbean: The Curse of the Black Pearl", Captain Jack Sparrow and Will Turner are seen walking along the bottom of a bay underneath an overturned boat in an attempt to board and commandeer a nearby ship. In a couple shots, they are shown with their heads on the inside of the boat, and they are able to breathe and even talk. The problem, though, is that the water is all around them, and even above them for quite some way.

I know that some may explain this similar to an old childhood game, where one would take a cup and submerge it in a large basin of water, and then remove it from the water upside-down, causing the water to exit the cup, but not allowing air to get in the empty space, forming a vacuum. What I am wondering is if this would be possible with a boat as it is shown in the movie, and, if so, how one would be able to breathe in a vacuum. I do realize that the movie is a work of fiction.

Thanks for the help!

-Mr. X

2007-01-30 11:22:51 · 5 answers · asked by Mr. X 2 in Physics