Science & Mathematics - 4 December 2006

2006-12-04 06:09:42 · 3 answers · asked by piercing soul 1 in Engineering

If i drive a car at higher rpm and follow a diesel with a trailer to reduce the drag of air like in nascar where they follow real close (but im not intending to drive that close) :P or lower rpm and not following anything?

2006-12-04 06:09:35 · 5 answers · asked by Blaman1 2 in Physics

we consider now only the particle aspect of the photon. we know that through an electron and a positron colliding, we get at least 2 photons. does that mean that we can approximate the ray of the photon with the ray of the electron?

2006-12-04 06:08:33 · 3 answers · asked by Anonymous in Physics

EG: x+5/x^2(x^2+4) = (A/x )+( B/x)+ (Cx+D)/(x^2+4)
Vs x-1/(x+3)(x+5)^2 = (A/x+3)+ B/(x+5) +C/(x+5)^2

I am confused on the final step, in deciding when I should use a single variable (eg B/C/D) as the numerator in the last fraction, vs using Cx+D/ Bx+C (etc).

Can someone please tell me what purpose in life partial fraction domposition serves??? Variables are not solved, and it seems like an action in futility, simply rewriting a variable equation in a different format.

Thank you for your help and patience.

2006-12-04 06:06:38 · 4 answers · asked by Linda T 1 in Mathematics

2006-12-04 06:05:54 · 4 answers · asked by James D 1 in Zoology

I've performed an experiment with oscilloscope, applying 10V P-P sine wave and then plotting the voltage across resistor (current) and voltage across diode (voltage) in XY mode of the oscilloscope. The IV curve in 100Hz was quite different than the IV curve in 5000Hz. Any theoretical explanations.

2006-12-04 06:05:47 · 2 answers · asked by The Potter Boy 3 in Physics

Which of the following is false?

1. In a chain elongation, the amino acids are added to the chain according to the codon sequence in the messenger RNA

2. Several ribosomes, called a polyribosome, can travel along the messenger RNA molecule, translating it at the same time.

3. The general shape of transfer RNA molecules is uniform

4. Enzymes found in the ribosome catalyze the formation of the bonds in the new polypeptide.

5. none of these

(I am fully confused and lost on this one. If you could explain your answer, I would greatly aprreciate it!) Thanks again.

2006-12-04 06:04:23 · 4 answers · asked by wendy h 3 in Biology

2006-12-04 06:04:14 · 8 answers · asked by Anonymous in Mathematics

I have the flu and have been browsing through this question in my physics book, trying to beat boredom...

I have the answer, but not sure if it is right...

2006-12-04 06:02:42 · 2 answers · asked by Miss LaStrange 5 in Physics

2006-12-04 05:59:17 · 15 answers · asked by Brian 4 in Zoology

Rather than just a normal cyclic variation in the Earth's temperature?

2006-12-04 05:58:43 · 11 answers · asked by jessica_stay 1 in Biology

2006-12-04 05:57:41 · 1 answers · asked by sims 1 in Biology

2006-12-04 05:57:16 · 5 answers · asked by sapphiredragon94 2 in Geography

if u were on the moon and throw lets say a baseball as hard as u could would it ever stop? ( not by hitting an asteroid or planet ) just if it were on a clear path hypothetically would the ball ever stop?

2006-12-04 05:56:28 · 6 answers · asked by Richard C 3 in Astronomy & Space

Is it possible to integrate something like e^sqrt(x) without using integration by parts or anything but substitution really?

2006-12-04 05:55:35 · 2 answers · asked by Hatori H 1 in Mathematics

Give me its solution how I can do it....

Find the center, vertices, and foci for the ellipse: x^2/36 + Y^2/81 = 1

2006-12-04 05:54:41 · 6 answers · asked by Anonymous in Mathematics

Need ellaborate plans for the process with recipes of chemicals to be used in tanks..

2006-12-04 05:53:43 · 1 answers · asked by Saddam 1 in Earth Sciences & Geology

2006-12-04 05:52:21 · 4 answers · asked by sp5792 1 in Earth Sciences & Geology

This is for business calculus.

2006-12-04 05:52:00 · 2 answers · asked by db_vg 1 in Mathematics

I need chemicals and formulas for their combos.. thanks anyone...

2006-12-04 05:51:26 · 1 answers · asked by Saddam 1 in Botany

2006-12-04 05:51:06 · 2 answers · asked by jessica_stay 1 in Biology

The Bible says that God is omnipresent meaning God is everywhere at one time. Could dark matter be God? I mean sense it is invisible and nobody can identify it?

2006-12-04 05:50:35 · 16 answers · asked by Anonymous in Astronomy & Space

2a + 3b = -1
3a + 5b = -2

2006-12-04 05:49:47 · 4 answers · asked by Meg ♥ 1 in Mathematics

A student prepares a solution by dissolving 4.84 g of NaCl in enough water to make 200. mL of solution.
The student then transfers 26.0 mL of this solution into a 100. mL volumetric flask. Water is then added
up to the 100. mL mark.
What is the final molarity of NaCl in the 100. mL flask ?

2006-12-04 05:46:12 · 2 answers · asked by Anonymous in Chemistry

2006-12-04 05:46:12 · 4 answers · asked by Nurse2b 1 in Biology

generates 0.01 W/m^2 at 19 m at a frequency of 4 kHz. Assume the speaker spreads its enegy uniformly in 3 dimensions.

A) What is the total acoustic power output of the speaker in units of W?
B) At what distance will the intensity be at the pain threshold of 8 W/m^2 (in units of m)?
C) What is the intensity at 12 m (in W/m^2)?

2006-12-04 05:45:22 · 2 answers · asked by Anonymous in Physics

If 1.5g of salicylic acid is heated with an excess of acetic anhydide, what is the theoretical yeild of acetylsalicylic acid?

2006-12-04 05:43:00 · 1 answers · asked by SweetAngel 1 in Chemistry

2006-12-04 05:41:49 · 12 answers · asked by steph 1 in Mathematics

A laser range finder is able to compute a distance up to 3 km with an accuracy of 99.5%. What possible error is there in a reported measurement of 2500 meters?
A less than 5 meters
B between 5 an 10 meters
C between 10 and 15 meters
D over 20 meters

2006-12-04 05:41:02 · 5 answers · asked by star wars freak 2 in Mathematics

I want to hear from people who really believe the moon landings were faked, why they believe that way, and what proof they have. I need a good laugh.

2006-12-04 05:40:57 · 5 answers · asked by Anonymous in Astronomy & Space