Science & Mathematics - 7 February 2007

In biology we are studying fermentation. We had to make bread with yeast (because it contains alcoholic fermentation) I made biscuits. We have to write a paper on how fermentation is involved in the bread making process. HELP!?!? THANKS!

2007-02-07 14:05:12 · 1 answers · asked by valda 1 in Biology

x = 16 is a solution of the equation 4x + 9 = 33

2007-02-07 14:04:49 · 11 answers · asked by Anonymous in Mathematics

Given: Atmospheric pressure is 101300 Pa. The density of water is 1000 kg/m^3. The viscosity of water is negligible.
Water flows at speed of 4.3 m/s through a horizontal pipe of diameter 3.4cm. The gauge pressure P1 of the water in the pipe is 1.8 atm. A short segment of the pipe is constricted to a smaller diameter of 2 cm.

What is the gauge pressure of the water flowing through the constricted segment? Answer in units of atm.


Whoever figures this question out first will get the best answer. Thanks!

2007-02-07 14:04:00 · 1 answers · asked by Cool_Tall_One 3 in Physics

A customer ordered fifteen Zingers. Zingers are placed in packages of four, three, or one. In how many different ways can this order be filled? Please show all your work :)

2007-02-07 14:01:30 · 3 answers · asked by Dan 1 in Mathematics

2007-02-07 14:00:48 · 6 answers · asked by Anonymous in Chemistry

what exackly does the Diplomate word mean?

2007-02-07 14:00:16 · 3 answers · asked by xoxoj85 1 in Medicine

sound to electrical energy
p.e to k.e
electrical to k.e?

2007-02-07 14:00:14 · 2 answers · asked by shelly 3 in Physics

Phobos is a moon of Mars
Phoebe is a moon of Saturn

Here are some images of them.

Phobos:
http://en.wikipedia.org/wiki/Image:Phobos-viking1.jpg

Phoebe:
http://en.wikipedia.org/wiki/Phoebe_(moon)

I could get better pictures of them if that would be usefull.
Or, Could anyone recommend a better place to ask this question?

2007-02-07 13:59:50 · 3 answers · asked by V. 3 in Astronomy & Space

I will be going to florida on the night of the 17th, and the launch is on the 15th. So in your opinion will it get delayed at least two days.

2007-02-07 13:59:44 · 2 answers · asked by Anonymous in Astronomy & Space

Use I=PRT (interest = principal x rate x time) for these problems. Solve


7. A loan of $6400 at 12.5% simple interest is to be repaid in 4 1/2 years. What is the total amount to be repaid?

I keep getting $3,600. Please show me how you got the answer. The back of the book says 10,000 as the answer.

8. A 6,500 automobile loan is to be repaid in 3 years. The total amount to be repaid is $9230. If the interest were simple interest, what would be the annual rate?

I got 47 1/2 %

Please show how you got the answer?

2007-02-07 13:59:43 · 5 answers · asked by Anonymous in Mathematics

2007-02-07 13:58:51 · 2 answers · asked by sanam p 1 in Botany

2007-02-07 13:57:46 · 1 answers · asked by neena m 1 in Physics

:(

2007-02-07 13:57:40 · 1 answers · asked by Anonymous in Physics

how do you figure out the equivalent fraction if the numertor is missing from the second fraction(ex 2/6, /18)

2007-02-07 13:55:30 · 9 answers · asked by Felicia F 1 in Mathematics

2007-02-07 13:55:00 · 6 answers · asked by Maniaka 5 in Physics

a source emits sound uniformly in all directions. There are no reflections of the sound. at a distance r1 from the sourcee the sound is 12 dB louder than it is at a distance r2 from the source. What is the ratio r1/r2?

2007-02-07 13:54:42 · 1 answers · asked by gerald R 1 in Physics

...can never have atoms with eight valance electrons even when it forms bonds? why?-personally how do you know this?

a. hydrogen
b. oxygen
c. carbon
d. nitrogen

2007-02-07 13:53:11 · 4 answers · asked by lisa r 1 in Chemistry

2007-02-07 13:51:42 · 1 answers · asked by babygurl 1 in Biology

2007-02-07 13:50:46 · 13 answers · asked by Vivian T 1 in Mathematics

how it is possible in freq 2.5GHz ? i would like to know how it is possible if you have refrences please let me know about those?

2007-02-07 13:45:15 · 3 answers · asked by Tom 1 in Engineering

2007-02-07 13:45:05 · 3 answers · asked by Anonymous in Physics

A natural -gas pipeline with a diameter of 0.148 m delivers 2.73m^3 of gas per second. What is the flow speed of the gas? Answer in units of m/s.

2007-02-07 13:44:09 · 2 answers · asked by neena m 1 in Physics

if y= 5x-3 and 3x -y= -1, what is the value of y?

A. 2
B. -1
C. 7

2007-02-07 13:43:17 · 9 answers · asked by chica 1 in Mathematics

The molecular formula of perylene is C20H12. What is the molecular weight? What is the empirical formula? What is the empirical formula weight? What is the relationship between the molecular and empirical formula weights?

2007-02-07 13:41:38 · 2 answers · asked by Alan l 1 in Chemistry

2007-02-07 13:41:14 · 1 answers · asked by neena m 1 in Physics

Could someone explain how i would go about solving this?
Help is appreciated.

2007-02-07 13:41:01 · 9 answers · asked by Corey H 2 in Mathematics

2007-02-07 13:40:39 · 2 answers · asked by terror_kitten 1 in Physics

Ion channels aid the movement of (A) molecules up a conc. gradient (B) carrier proteins within the lipid bilayer (C) ions across a cell membrane (D) water across a cell membrane.

2007-02-07 13:39:58 · 0 answers · asked by Anonymous in Biology

2007-02-07 13:39:41 · 10 answers · asked by Veronica C 1 in Astronomy & Space

By car I mean a rolling science project about the size of a shoebox or smaller. It is going to be powered by a small 9 Volt motor, which will rotate the wheel axle. I assume that the wheel size will not affect the RMP of the mini-motor, but please correct me if I'm wrong. Scientific answers or helpful equations would be greatly appreciated.

2007-02-07 13:39:31 · 10 answers · asked by friskydoodle 1 in Engineering