Science & Mathematics - 31 December 2006

2006-12-31 03:16:36 · 6 answers · asked by rik b 1 in Physics

2006-12-31 03:13:39 · 6 answers · asked by rahul_kumar_suman 1 in Biology

Can sides A + B of a right triangle be found if side C is known and you know that the ratio of the other two sides is 16 : 9 ?

I know that A^2 + B^2 = C^2, and normally you'd need to either know 2 of the lengths of the sides and/or an angle other than the right angle.

This is the question I'm trying to answer:
If I know that a high-defininition (widescreen) television has a 61" (diagonal) screen, and I also know that the aspect ratio for this type of television is 16 (horizonal) : 9 (vertical), can I solve for the other sides? I've tried using the 3-4-5 model to solve this and it does not apply. Can the actual width of the television be calculated in inches given this information?

This would be a good problem for a math test - feel free to use it, teachers!

2006-12-31 03:11:27 · 12 answers · asked by Conal Cochran 2 in Mathematics

The edge of a cube is increaing at the rate of 0.05 centimeters per second. In terms of the edge of the cube, s, what is the rate of change of the volume of the cube, in cubic centimeters per second?

a. 0.05^3
b. 0.05s^2
c. 0.05s^3
d. 0.15s^2
e. 3s^2

2006-12-31 03:07:55 · 5 answers · asked by Anonymous in Mathematics

please show work and just to let you know that they are fractions

2006-12-31 03:07:16 · 14 answers · asked by n 1 in Mathematics

please show work

2006-12-31 03:04:42 · 8 answers · asked by n 1 in Mathematics

Al(NO3)3(aq) + NaOH(aq)

i know it starts by putting the + and - together so you get AlOH+Na(NO3)3 for the second part. but does that mean i replace the original one? > NaOH???

after that how do you balance it and write the ionic equation??

i dont understand this at all. sorry.

2006-12-31 03:04:35 · 7 answers · asked by Anonymous in Chemistry

2006-12-31 03:03:23 · 2 answers · asked by fe 1 in Botany

during the studying process and the working process.

2006-12-31 03:02:59 · 13 answers · asked by TheOne 1 in Medicine

how can there be a single origin for the expansion,ie the so called 'primeval bit of matter' (how did THAT get there?)could only expand from a SINGLE point.?

2006-12-31 03:02:16 · 8 answers · asked by shyteforbrains 1 in Astronomy & Space

thank you

2006-12-31 02:57:17 · 11 answers · asked by n 1 in Mathematics

My book says heat developed in a resistor is I^2 R, where I is the current and R the resistor,

can anyone please explain how this formula was derived?
Thanks

2006-12-31 02:56:30 · 7 answers · asked by ishisgreat 1 in Physics

2006-12-31 02:53:50 · 15 answers · asked by Anonymous in Zoology

2006-12-31 02:50:58 · 6 answers · asked by sipppihercoldsaursasaurus 1 in Earth Sciences & Geology

2006-12-31 02:47:48 · 24 answers · asked by joflo 1 in Weather

2006-12-31 02:45:10 · 4 answers · asked by mR.qUESTiON?? 2 in Engineering

2006-12-31 02:40:36 · 11 answers · asked by rhimik2000 1 in Engineering

2006-12-31 02:31:57 · 5 answers · asked by harvardgurl 2 in Mathematics

Could someone please either solve these or tell me how to do it.

*Simplify the following*

- SQRT363 X^6 Y^3

SQRT15 + SQRT60 - SQRT135

3^SQRT64

SQRT2 over SQRT3 XY

(3 SQRT2 + 2 SQRT5) (4 SQRT2 -SQRT5)

SQRT-3 + SQRT -27

2 SQRT-6 (SQRT-2 + 4 SQRT-6)

SQRT -2 over SQRT 9

6 over 4 + 3i

Thank You very much to anyone who answers! :)

2006-12-31 02:30:57 · 3 answers · asked by Brad C 1 in Mathematics

1rst is to know if a function is increasing/decreasing.

2nd is know if there is a minimum/maximum (peek).

2006-12-31 02:27:39 · 11 answers · asked by jojorockman 2 in Mathematics

2006-12-31 02:22:31 · 12 answers · asked by Anonymous in Physics

and the number of presents you already had. For instance, on the first day you have one, on the second day you have 2+1=3, on the third day you have 3+3=6. How many presents do you have at the end of the twelve days, and for n number of days of Christmas how many presents do you have? Prove by induction.

2006-12-31 02:22:24 · 3 answers · asked by TM 3 in Mathematics

2006-12-31 02:17:04 · 3 answers · asked by red_0rient 1 in Chemistry

2006-12-31 02:14:17 · 7 answers · asked by Anonymous in Mathematics

How many pages are there? How many times is the digit three printed.

I can do this problem manually by counting the digits from 1 to 9, 10 to 99 and 100 through x...but forgot how to do the math behind it...

2006-12-31 02:14:11 · 3 answers · asked by TM 3 in Mathematics

At present antimatter only exist in the super colliders of Universities. I believe antimatter is the energy between the Negative and Positive of any magnetic field. As per example: hold a bar magnet or for that matter a ring magnet in hand and try to hold a steel blade in the area between the two edges. The blade will go to Negative or Positive. Try as you may, there is no nuetral. Conclusion is that there is an energy that is invisible and without matter. Dark-matter perhaps, or all the missing matter of the Universe that Science can not explain. Devices have been built that "run" as a matter to sugest, Mobility based upon this un recognized phenomina of nature. This energy has no need for thermodynamics or gravity as a means of perpetuating a working machine. It surely answers a few questions that have been in the minds of many learned people. The Trinity of Negative & Positive is to know the power of '&' the Helix. Simple science reminds us that all matter is of solid, liquid or gas

2006-12-31 02:10:56 · 4 answers · asked by blueridgemotors 6 in Physics

i dont understand y is it impossible to locate the position and
velocity of an electron simutaneously....... it seems... well......
i dont know......
i wonder what is this- '' probability''

2006-12-31 02:10:34 · 8 answers · asked by Deranged Soul.. 2 in Chemistry

it is a question from electricity.

2006-12-31 02:07:14 · 7 answers · asked by Anonymous in Physics

2006-12-31 02:06:07 · 13 answers · asked by TheOne 1 in Physics

2006-12-31 02:04:36 · 4 answers · asked by vgd 2 in Mathematics