Science & Mathematics - 12 September 2007

Larry has an annual return of $213 from $3000 invested at simple interest, some at 5% and the rest at 8$. How much is invested at each rate? (Hint: Interest earned = Amount invested x Rate of interest.)

2007-09-12 14:41:57 · 3 answers · asked by Jenny 3 in Mathematics

Travelling in a vehicle at 120km a fly is hovering in the middle of the vehicle totally oblivious to the movement (sure there is no wind resistance etc). At 140km the fly is still not plastered to the back window, how fast do you think you can go before the fly can feel it?

2007-09-12 14:41:36 · 8 answers · asked by brownstone_lives 1 in Astronomy & Space

If a machine is programmed to elaborate answers by processing input as a human mind, does this machine achieve consciousness?

2007-09-12 14:41:27 · 3 answers · asked by Carre 1 in Other - Science

Would shock waves from the explosion of the bomb in Russia travel through the earth's crust to create movement of the fault in Indonesia?

2007-09-12 14:39:30 · 4 answers · asked by Anonymous in Earth Sciences & Geology

How do I write an equation for this sequence:

3, 5, 9,. 17, 33, 65 [...] 4097

2007-09-12 14:36:12 · 6 answers · asked by ☆ 2 in Mathematics

This is strictly a scientific question, not religious. The Mayan calender, which has been perfectly precise for 500,000 years has ended in 2012. Now in 2012 we see a major scientific marvel. Once every 26,000 years the sun alligns with the milkyway. That will be December 21st, 2012. Now the sun alligning with milkyway is the event that the Mayans predicted to bring the end of the earth. Now the question, do you believe that if an ancient historical tribe can precisely measure 500,000 years of dates, that they may be right about the 2012 celestial event destroying the earth.

Please i am looking for productive opinions not some "blah its bull" answer, thanks.

Also the celestial event that occurs every 26,000 years where the sun and milkyway allign is true and has been used as a theory to why mars is uninhabitable but contains water (because this celestial event destroyed it).

2007-09-12 14:35:31 · 25 answers · asked by Jesus IS REAL 3 in Astronomy & Space

Is it true that tropical storm Humberto is going towards south-east Texas? I just heard about it... Is it going to hit my town? I live in Livingston,Texas. What will the weather be like tommorow in my area? Thanks for ya'lls help :)

2007-09-12 14:35:28 · 6 answers · asked by Anonymous in Weather

2007-09-12 14:35:24 · 8 answers · asked by Anonymous in Biology

When I put '^4', I mean the variable 'r' is raised to the 4th exponent. How do I get the two variables, a and r alone? And how to solve for both?

2007-09-12 14:34:06 · 2 answers · asked by Red Sox 4 Life!! 2 in Mathematics

2007-09-12 14:32:33 · 1 answers · asked by Anonymous in Physics

2 (to the xth power) = 9

How do I determine the value of x?

2007-09-12 14:32:02 · 6 answers · asked by bokonon1000 1 in Mathematics

3.

You are marooned on an island where there are only liars and truth tellers. You meet a couple and ask the husband, "Are you liars or truth tellers?" Whan can you conclude if he replies as folllows? Explain.
a) If I am a truth teller than so is my life
b) I am a truth teller if and only if my wife is a truth teller

This is logic ? number 3. First person to get it right gets 10 points. Take a guess if your clueless. Show bit of work. For more logic questions go to my profile

2007-09-12 14:31:41 · 6 answers · asked by Anonymous in Mathematics

i need to find the equation of the line that is tangent to the given function and parallel to the given line. please outline the steps with explinations, thanks.

f (x) = (x^3) + 2

3x - y - 4 = 0 or in other words y = 3x - 4

2007-09-12 14:30:20 · 3 answers · asked by Adam 2 in Mathematics

im looking around for an eyepiece for my telescope and wanted to know if Celestron Plossl is a good brand?

this is the one im talking about
http://www.atozastro.com/shop/ProdImages/celestron_9mm.jpg

2007-09-12 14:28:01 · 4 answers · asked by William 1 in Astronomy & Space

please help!!!!!

2007-09-12 14:26:13 · 6 answers · asked by Anonymous in Mathematics

This was posted by my Calc. Professor:

The gravitational force exerted by Earth on a unit mass at a distance r from the center of the planet is

F(r) { GMr/R^3 if r { GM/r^2 if r >_ (Greater than or equal to) R

where M is the mass of the Earth, R is its radius, and G is the gravitational constant. Is F a continuous function of r?

The rational functions don't seem to present any problems, the denominators are exponential so the won't equal 0. It seems that F is a continuous function of r.

Can anyone help me with this problem?

2007-09-12 14:24:41 · 2 answers · asked by the Jam 2 in Mathematics

2007-09-12 14:24:13 · 2 answers · asked by Anonymous in Earth Sciences & Geology

2. 36x63=
3. 56/5629=
4. 15/3622=
5. 60/5110=

2007-09-12 14:21:35 · 1 answers · asked by rosemariestewart64 1 in Mathematics

|2x +5| = x+1

(please show steps in solving this question.)

2007-09-12 14:19:50 · 2 answers · asked by Anonymous in Mathematics

Well theres one last question left on my homework. I can't think of any reasoning for a correct answer. I just can't see why 1 cylinder is better then the other.

Heres the question

2. Of the following graduated cylinders - 100mL, 25mL, or 10mL - Which would you use to most accurately measure 8mL of a liquid? Explain you answer.


If you guys and girls can give me some help, I can go to bed and be fresh for school and the football game after. I need to have a big game tomorrow.

2007-09-12 14:18:28 · 3 answers · asked by Anonymous in Other - Science

I will post the answer later.

2007-09-12 14:17:42 · 10 answers · asked by Anonymous in Astronomy & Space

Last school year i was one of the top students in math and now i got an F and D. its barely the First semester and i think its no big deal but the other half thinks i will probably fail. Which half should i listen to, First, Second, or BOTH?

2007-09-12 14:16:01 · 5 answers · asked by MAC529 1 in Mathematics

I am interested in a career in information technology. However, I am not great at math. Do you need to be especially good at math to excel, or can I make it in the field? Also what kinds of classes should I be taking in high school? And finally: what is the highest level of math needed? (e.g. algebra, calculus, trig?)

2007-09-12 14:15:23 · 2 answers · asked by Derek W 2 in Mathematics

http://img386.imageshack.us/img386/3070/12ll6.jpg

2007-09-12 14:14:28 · 1 answers · asked by mk 1 in Mathematics

Evaluate the limit

lim
x--> Infinity

√9+10x^2 / (7+9x)

2007-09-12 14:13:25 · 1 answers · asked by Rachel 1 in Mathematics

2007-09-12 14:11:05 · 7 answers · asked by Melissa R 1 in Mathematics

I'd love to know your source as well, if you can. Giving out best answer. Thanks in advance!

2007-09-12 14:09:08 · 1 answers · asked by mar 2 in Chemistry

The equation of a standard parabola is in standard form : y=ax^2+bx+c, factored form: y=a(x-s)(x-t), and vertex form: a(x-h)^2+k, and the quadratic formula is x = -b ± √(b2 - 4ac)/2a , I'm just curious how it will appear in a horizontal parabola. If their is such thing as a horizontal shaped parabola, please give an example of an equation or a word problem.

2007-09-12 14:08:12 · 2 answers · asked by Anonymous in Mathematics

Biology includes what other subgroups?
thnx

2007-09-12 14:08:06 · 7 answers · asked by yaknow.. 3 in Biology

http://earthobservatory.nasa.gov/Laboratory/Biome/Images/tempbelize.gif

for the months? i would do it but i forgot the formula.

2007-09-12 14:08:02 · 3 answers · asked by Anna 3 in Mathematics