Science & Mathematics - 10 November 2007

2007-11-10 19:33:13 · 3 answers · asked by shokraneh m 1 in Mathematics

So...Washington, Jefferson, Roosevelt, and Lincoln are there. If they were to carve a fifth head, which president would like to see there and why?

2007-11-10 19:28:09 · 15 answers · asked by Kuervo 4 in Geography

We define an interesting number to be a number that has at least one interesting property.

Prove that all natural numbers are interesting.

2007-11-10 19:26:18 · 4 answers · asked by Curt Monash 7 in Mathematics

2007-11-10 19:23:14 · 1 answers · asked by lost! 1 in Astronomy & Space

I dont believe that we landed on the moon. It was staged. What is your oppinion??

2007-11-10 19:10:19 · 16 answers · asked by prophetofzion07 1 in Astronomy & Space

43,252,003,274,489,856,000=?

2007-11-10 19:07:26 · 12 answers · asked by sundeep 9732 1 in Mathematics

2007-11-10 19:06:45 · 3 answers · asked by Anonymous in Engineering

2007-11-10 18:57:32 · 7 answers · asked by Linda C 1 in Earth Sciences & Geology

i have the theory and working of different flip flops... i know that SR stands for set reset and T stands for toggle... what do jk and d stand for?

2007-11-10 18:53:31 · 4 answers · asked by arjun k 1 in Engineering

I have forgotten how to find dy/dx and d2y/dx2 of the function.

2007-11-10 18:53:24 · 4 answers · asked by Anonymous in Mathematics

Ok, long story short, I'm in college and I can't seem to get past math 030, which is equivalent to the SECOND year of high school algebra (taken usually about your Junior year). I've always had issues with math since I was a kid.

I was wondering, how hard is a Statistics math class? Would this be a good alternative?

2007-11-10 18:43:15 · 9 answers · asked by Anonymous in Mathematics

if g(x)= x^2-1 then g(x-1)-g(x+1)=?

2007-11-10 18:38:52 · 9 answers · asked by Anonymous in Mathematics

2007-11-10 18:35:35 · 14 answers · asked by ~Katie~ 2 in Earth Sciences & Geology

Hi friends.
Do you know what causes emphases ripple marks?
I mean what's the reason?
You know that usual ripple marks are like this:
)---)---)
)---)---) --------> Current Direction
)---)---)
But emphases ripple marks are like this:
)-------)
----)----
)-------) --------> Current Direction
----)----
)-------)

???

2007-11-10 18:32:37 · 1 answers · asked by Anonymous in Earth Sciences & Geology

A few weeks ago, I was climbing a mountain with some friends. We made a stop to eat and rest. I looked over to the side and on the ground I found a nice watch. It was showing the current time and date. I started to wonder how it got there, and came to the logical conclusion that the rocks, wind, rain and other natural elements joined and, after thousands of years, formed the watch. My friends think I'm nuts. How can I convince them?

2007-11-10 18:31:12 · 8 answers · asked by Lola 4 in Earth Sciences & Geology

2007-11-10 18:29:42 · 3 answers · asked by teddy1066 2 in Engineering

When the first 2 guys invented the Airplane they have reported UFO's a flying space craft. Ppl have been reporting UFO's for many years. For example US governement knows alot of stuff about UFO's but for some reason they don't want to tell anyone about why is that ? Were not the only ones in space im sure alot of life exists in space. There have been reports by Neal Armstrong the Apalo pilot he has reported one time " Some object has been fallowing there craft while there were falying to the moon and many more reports have been made by NASA. Now days NASA is keeping everything to secret for some reason. Mexico is one of the major Hot spots of UFO's but for some reason are governemt is not telling us about it. Sorry for my bad English im Russian i been living in US for 1 year now. So why dont US tell us about allience and UFO's ?

2007-11-10 18:24:21 · 19 answers · asked by Anonymous in Astronomy & Space

251*3.00,000*60*60*24*365=?

2007-11-10 18:23:08 · 2 answers · asked by sundeep 9732 1 in Mathematics

According to a simple physiological model, an athletic adult needs 20 calories per day per pound of body weight to maintain his weight. If he consumes more or fewer calories than those required to maintain his weight, his weight changes at a rate proportional to the difference between the number of calories consumed and the number needed to maintain his current weight. The constant of proportionality is 1/3500 pounds per calorie.

(a) Suppose a person has a constant caloric intake of 3000 calories per day. Write a differential equation for W(t).

dW/dt = ?

(b) What is the equilibrium solution?

= ? pounds

(c) If a person initially weighs 160 pounds, what will happen to their weight if their constant caloric intake is 3000 calories per day?
Increase?
Remain constant?
Decrease?

2007-11-10 18:16:52 · 3 answers · asked by liouchan 1 in Mathematics

Say a person could stand outside our Universe and is able to measure the progression of its expansion. And he has a twin on the other side.

At some point in time he will take another measurement and observe that the Universe has grown larger. But will an object within the Universe - in the form of his twin - be proportionately larger along with the Universe, or will he be the same size as the person outside the Universe?

I ask this because I was wondering why it is that "space" is expanding and not the objects within it.

If you have any questions before you want to answer, please post them. I will be checking in on this question over the next few days.

2007-11-10 18:16:36 · 4 answers · asked by Awesome Bill 7 in Physics

Assuming I have a lighting fixture which uses FOUR 500W halogen lamp.

Is it possible that the power rating of the lighting fixture be at 450W? or can the electrical power be summed up to 2000W?

If possible, please quote a source for your answer. Thanks.

2007-11-10 18:09:07 · 1 answers · asked by NoBeoKa 1 in Physics

2007-11-10 18:03:33 · 3 answers · asked by nhik 1 in Physics

2007-11-10 18:01:47 · 3 answers · asked by Mark Y 1 in Chemistry

when the food moves from the stomach into the small intestine , the ph levels changes from acidic to alkaline?
this is because?? why??

2007-11-10 18:00:37 · 2 answers · asked by Anonymous in Biology

1)the perimeter of a rectangle is 44 inches and its area is 112 square inches. find the length and the width of the rectangle.

2)it takes terry 2 hours longer to do a certain job than it takes tom. they work together for 3 hours: then tom left and terry finished the job in 1 hour. how long would it take each of them to do the job alone.

2007-11-10 17:53:47 · 7 answers · asked by Anonymous in Mathematics

if you had a heart condition which one would be better

2007-11-10 17:52:54 · 12 answers · asked by ahah k 1 in Biology

2007-11-10 17:52:07 · 4 answers · asked by sonu 2 in Weather

I am doing this project, concerned with fourier analysis, and there is a question i can't answer. Basicly I have to plot the power spectral density versus frequency, and they say that i only need to plot frequencies up to 200 Hz, since frequencies above that are meaningless.

2007-11-10 17:47:57 · 4 answers · asked by Val 4 in Engineering

This was on my bio quiz and it like was related to a unit on like hyper/hypotonic solutions and passive transport, diffusion, high/low concentrations, and active transport. anyone know what the answer was?

2007-11-10 17:43:36 · 4 answers · asked by Anonymous in Biology

If you filled a balloon with enough helium, would it eventually pass right through our atmosphere and into space?

2007-11-10 17:42:04 · 10 answers · asked by poohntao 2 in Astronomy & Space