Science & Mathematics - 23 November 2006

in the wood and causes it to swing upward to a height of 0.1m. If the mass of the wood block is 2kg, What was the initial speed of the bullet?

2006-11-23 16:46:54 · 5 answers · asked by suhel 1 in Physics

2006-11-23 16:42:10 · 9 answers · asked by teo 1 in Physics

Originally, rivet breaking strengths are normally distributed with mean of 2500lbs, and standard deviation of 150lbs.

Suppose 100 rivets of the type are selected.

-Calculate the probability that 10 or more of the rivets will have a tensile strength exceeding 2725 pounds.

-Calculate the probability that the average tensile strength of all the rivets tested will exceed 2540 pounds.

Thanks for your help!!

2006-11-23 16:40:12 · 2 answers · asked by abe_cooldude 1 in Mathematics

I'm sure you read or heard that humans were planted here by an alien race and every once in awhile you read and/or heard of UFOs being sighted all over the world! Could those UFOs be checking up on the creation they planted here? Because of the Roswell incident, do you believe the government is hiding the fact that this is true, that the aliens they claim they captured told them we humans were not of this earth?

2006-11-23 16:39:53 · 5 answers · asked by ZORRO 3 in Astronomy & Space

It used to be land, didn't it?

2006-11-23 16:36:45 · 7 answers · asked by Anonymous in Earth Sciences & Geology

A. Subtraction
B. All mathematical operations
C. Multipication
D. Division has no inverse operation.

2006-11-23 16:35:01 · 14 answers · asked by thecrazyone 2 in Mathematics

http://tinypic.com/view/?pic=2ia7tqo

2006-11-23 16:32:58 · 3 answers · asked by yisel 1 in Mathematics

In the Galapagos Islands at the equator, the acceleration of a freely falling body is 9.780m/s^2, while at he latitude of Oslo, Norway, it is 9.831m/s^2. why does the acceleration differ?

2006-11-23 16:31:56 · 8 answers · asked by suhel 1 in Physics

In the problem 10-4=6 what is the correct term for the number 4.

2006-11-23 16:31:37 · 17 answers · asked by thecrazyone 2 in Mathematics

2006-11-23 16:27:45 · 15 answers · asked by Anonymous in Geography

that much force. What is happening in this instance?

2006-11-23 16:25:41 · 3 answers · asked by suhel 1 in Weather

Give 2 examples of organisms reproducing asexually.

2006-11-23 16:23:47 · 12 answers · asked by Matilda C 1 in Zoology

It might be possible our universe is a substitute for another universe that resembles that alternate universe. Astronomers have stated among themselves that there's another universe that has a planet exactly like ours, but its not called earth. What is your valued opinion on all this?

2006-11-23 16:22:02 · 4 answers · asked by ZORRO 3 in Astronomy & Space

hybridization orbitals formed by oxygen atom
hybridization of carbon atom in carbon disulfide
hybridization of sulfur atom in SO2
hybridization of sulfur in SF4
hybridization of central oxygen atom in ozone O3
hybridization of iodine atome in periodate ion

2006-11-23 16:21:56 · 2 answers · asked by collegemom 2 in Chemistry

Newton's third law, the wagon exerts an equal and opposite force of 400N. Since the two forces are in opposite directions, why don't they cancel each other and produce zero acceleration?

2006-11-23 16:21:39 · 2 answers · asked by suhel 1 in Physics

Ok, so...
If someone begins working at $10 an hour. Each year he gets a raise of $1/hour. He's working 40 hours a week and 52 weeks a year. He deducts 10,000 a year for living expenses, and puts the rest in an investment that yields 4% compounded annually.

How many years will it take him to have saved $300,000 in his investment?

Thanks a bunch!

2006-11-23 16:19:23 · 5 answers · asked by Anonymous in Mathematics

2006-11-23 16:17:41 · 13 answers · asked by Nautilus 2 in Physics

2006-11-23 16:16:26 · 8 answers · asked by satya 1 in Mathematics

Who came up with it? Does it have any other names? Why choose that name for it?

2006-11-23 16:09:59 · 10 answers · asked by yellowvalley 2 in Astronomy & Space

there are 18 animals in a field which includes chickens, sheep, cows. the total number of legs is 10 more than thre times the total number of heads. how many chickens are in the field?

2006-11-23 16:05:33 · 6 answers · asked by Han Tran 2 in Zoology

2006-11-23 16:05:17 · 3 answers · asked by Mari 1 in Biology

According to a Circadian Biologist it will be freely available in the next 10yrs or so, and he claims, there will be no side effects!

Isn't sleep rather a waste of our short time on this Earth?

2006-11-23 16:02:48 · 24 answers · asked by Anonymous in Medicine

2006-11-23 16:02:38 · 3 answers · asked by unidentified user 1 in Zoology

I am trying to figure out how to draw a frog that is about to catch a fly. I am having trouble finding a photo online that shows whether the tongue curls down or up. Most of them show the tongue straight out or already having made contact with the bug. One animated cartoon showed it curled down. Any help would be appreciated.

2006-11-23 16:02:09 · 4 answers · asked by Cookie777 6 in Zoology

2006-11-23 16:01:09 · 2 answers · asked by short stuff 2 in Other - Science

2006-11-23 15:54:05 · 16 answers · asked by bgantcdd 2 in Astronomy & Space

My teacher was like breathing in 100% oxygen is bad, how is that bad I mean?? Isn't that the only thing we inhale and use. I just don't get it.
Well I suppose too much of a good thing is a bad things

2006-11-23 15:50:09 · 10 answers · asked by Mr. X 3 in Chemistry

2006-11-23 15:47:22 · 9 answers · asked by gillean666 1 in Biology

2006-11-23 15:40:38 · 5 answers · asked by Anonymous in Physics

I'm confused,I will start to study engineering in january but I don't know if I should study electrical or civil engineering,I like both I like buildings and bridges but I also like power generation,robotics and electricity overall.I know a lot about electricity because I'm a certified electrician.What do you think,any advice????which is better EE OR CE?????????THANKS FOR YOUR HELP!!!

2006-11-23 15:39:16 · 8 answers · asked by The Apostle 2 in Engineering