Science & Mathematics - 17 September 2007

if you were a ghosthunter & were pregnant would you still go out on vigils?
i've chosen not to because i hate to tempt fate but are there any pregnant paranormal investigators who do carry on regardless

2007-09-17 06:56:25 · 7 answers · asked by Anonymous in Paranormal Phenomena

I want to help revolutionize particle physics ! I know one trait, creativity, is a big one.. Any relevant thoughts, tips, etcetera would be great!

2007-09-17 06:56:12 · 5 answers · asked by justanotherfreak 1 in Physics

barrels per month (in mutiples of 100). Find the total oil produced by the well in its second three months of operation.

2007-09-17 06:56:09 · 4 answers · asked by biomes 1 in Mathematics

In the Daytona 500 auto race, a Ford Thunderbird and a Mercedes Benz are moving side by side down a straight-away at 72.5 m/s. The driver of the Thunderbird realizes that she must make a pit stop, and she smoothly slows to a stop over a distance of 250 m. She spends 5.00 s in the pit and then accelerates out, reaching her previous speed of 72.5 m/s after a distance of 340 m. At this point how far has the Thunderbird fallen behind the Mercedes Benz, which has continued at a constant speed?

2007-09-17 06:55:44 · 1 answers · asked by Foxychick 1 in Physics

Write the equation of the vertical line that contains the point (-8, -9).

I have been trying to figure out this question but I am stumped can some one go through this with me step by step please?

2007-09-17 06:53:38 · 6 answers · asked by MEB 2 in Mathematics

2007-09-17 06:50:46 · 10 answers · asked by sup 1 in Mathematics

Can someone please explain to me how to do problems like -3x(x^2+2) or (2x + 5) (x^2 - x - 2).

2007-09-17 06:48:55 · 5 answers · asked by hollister89 1 in Mathematics

If I made 72 cupcakes for 34 students in a class, how many cupcakes would each student get if they all get an equall amount?

2007-09-17 06:44:55 · 9 answers · asked by Anonymous in Mathematics

85 children went to an amusement park where they could ride on the merry-go-round, roller coaster and ferris wheel. 20 of them took all 3 rides and 55 of them took at least 2 of the 3 rides. Each ride costs $1 and the total receipts from the group were $145. How many children did not try any ride?

2007-09-17 06:40:13 · 1 answers · asked by Anonymous in Other - Science

I'm talking about (n) factorial, as in (n!), it has something to do with permutations. And what are good math sites that explain permutation?

2007-09-17 06:38:10 · 7 answers · asked by Anonymous in Mathematics

A small charged sphere of radius a=1.00 cm is suspended by a nylon thread inside a larger neutral, conducting sphere. The larger sphere has an interior radius b=3.10 cm and is Δ=0.5 cm thick. The charge on the small sphere is q=0.90 nC. The two spheres are concentric and insulated from their surroundings. For the following questions, the origin of our coordinates is the center of the spheres.


1) What is the magnitude of the electric field at a radius 10.0 cm? Hint: Use Gauss's law, and remember that the outer sphere is neutral

2) What is the magnitude of the electric potential at the surface of the smaller sphere?

3) What is the magnitude of the electric potential at the outside surface of the larger sphere?




i can't figure these three out for some reason, pelse help

2007-09-17 06:28:34 · 2 answers · asked by chs_soccer_02 2 in Physics

You can have $1/4 coin (i.e. quarter) or $5 bill. Why not circulate $π bills?

2007-09-17 06:25:38 · 7 answers · asked by Alexander 6 in Mathematics

Problem: The speed of light is approximately 2.998 x 10^8 metres per second. How far can light travel in...
a.) 40 seconds
b.) 5 minutes
c.) 7 hours
d.) 1 day?

Thank you so much! If you don't mind show me how you figured the problem out! Thanks again and again!

2007-09-17 06:24:21 · 13 answers · asked by youlookingood 1 in Mathematics

1) A charge of 0.821 nC is placed at the origin. Another charge of 0.395 nC is placed at x1 = 12.9 cm on the x-axis


At which point on the x-axis does this potential have a minimum?


i dont get how to do this problem

2007-09-17 06:22:20 · 2 answers · asked by chs_soccer_02 2 in Physics

Can you name the capital of Canada?

2007-09-17 06:15:00 · 6 answers · asked by faye 2 in Geography

Calculate the magnitude and direction of the resultant force on an object that is acted on by a force of 4.0 N and a force of 10 N, that are

a) in the same direction

b) in opposite directions

c) at right angles to each other.

AS Physics Homework, thanks.

2007-09-17 06:14:35 · 3 answers · asked by Anonymous in Physics

2007-09-17 06:12:45 · 6 answers · asked by David goohall 1 in Mathematics

(I'm not an english user, cut me some slack.)
I know foods and I can tell who is the best chef If I observe him cooking.

Then, If surgeons observe them operation, Then you guys can tell he (or she) is good or not? I hope you get what I meant.

2007-09-17 06:11:10 · 3 answers · asked by esprit967 1 in Medicine

i've tried and tried and i really cant figure out how to do these please please could you help me by telling me the method on how to finding it and the answer
Thankyou so much!

http://x-o-best-answer-princess-o-x.piczo.com/?preview=y&g=37570679&cr=5&rfm=y

2007-09-17 06:10:40 · 4 answers · asked by Anonymous in Mathematics

Something in the robotics domain. Simple but not too popular.
I saw that the internet is full of line-follower robot and maze-solving robots. So I really don't want the same very common project. So, any suggestions?

2007-09-17 06:10:09 · 5 answers · asked by Words Of Wisdom 3 in Engineering

2007-09-17 06:04:27 · 1 answers · asked by Courtney P 1 in Physics

A ship leaves port A, and travels a distance of 60km due North, it then changes direction at B and travels a distance of 20km due East to a second port C.

a) Calculate the direct distance from A to C

b) Calculate the angle between due North and the line from A to C.

AS physics homework, I'm really stuck, need help quickly. Any useful help, will be appreciated.

2007-09-17 06:03:30 · 4 answers · asked by Anonymous in Physics

At what point do you just give up on wrapping your mind around something and forget the you pondered it in the first place?

2007-09-17 06:01:51 · 5 answers · asked by Anonymous in Physics

Simplify the square root, if possible - square root of 52

2007-09-17 05:54:20 · 4 answers · asked by E501P 1 in Mathematics

Okay.

I'm going to try to cover both sides here. If they are imagined, then the reason they are so widely controversial, and why some of the sightings are probably authentic, is because they really are government hoaxes. They could keep people distracted from the real "news" by getting them all pumped up on aliens. The "real" news has to do with the terrorist and crimes committed by our own government. So UFOs and such would just be yet another form of media lies and distraction that we are bombarded with on TV and Radio.

If they ARE real, which is what I've always felt, and the government is just trying to cover them up... then their exposure is STILL secondary to the situation we have with our own government. We should not be concerned with other species when our own is a complete, corrupt mess. The government is NOT going to disclose anything that could empower the civilians, so until the government is handled, lets forget about the UFOs and focus on them, yeah?

2007-09-17 05:51:23 · 7 answers · asked by The King in Yellow 1 in Astronomy & Space

is the idea of an IQ the current containment of knowledge just at the current time, or the is it the capability of knowledge that can be held. What i mean by the first sentence is the measurement of the IQ that has just been taken in the test the IQ that you currently have but also having the capability of raising it, or is it the maximum capability?

2007-09-17 05:51:03 · 5 answers · asked by hidavedavid 3 in Medicine

what if your approaching earth, does gravity increase at any point? perhaps the interior of earths core has more gravity than the surface?

2007-09-17 05:50:06 · 6 answers · asked by Backtash123 1 in Physics

When you rest your forehead on a pole and spin round and round, then try and walk in a straight line, you always stumble. How many revolutions would it take so that when you let go of the pole and try and step forward you fall over?

2007-09-17 05:46:58 · 10 answers · asked by Gem Gem 5 in Physics

I'm searching especially mechanical, pumps, automotiveand machines dictionaries, glossaries and may be an encyclopedia.

2007-09-17 05:42:21 · 1 answers · asked by gabrielsocolov 1 in Engineering

why because it can be used to make multiplying easy

29*71
because (a+b)(a-b)=a^2-b^2

29*71=50^2-21^2
50^2=2500 (5^2=25 bung a couple of noughts at the end)
and 21^2=(20*22)+1 (the reverse) (2*22=44---add a zero)
therefore 29*71=2500-441=2059

want to know more ask me

also 22 rule

know all the squares up to 25
and multiplying becomes real easy trust me (ok so i am number freak)

why ask me

2007-09-17 05:40:16 · 1 answers · asked by GOLD-FLAW 2 in Mathematics