Science & Mathematics - 31 August 2007

i'm a 3year student taking electrical course. i have a problem with the power factor term.lets say when someone say, the generator generate 80kw at 0.8lagging power factor? what is it actually mean? what is the real power value? and what is the reactive power value? pls help...

2007-08-31 18:27:39 · 6 answers · asked by luckyguy 2 in Engineering

ok, using the Ti 89 i plot my graph and need to find a time when y=50,000 so I can say what x will be..for exp, how do I do that?

2007-08-31 18:19:31 · 2 answers · asked by m_carl 1 in Mathematics

i need one labelled drawing showing the lobes of the liver,ducts of the liver,stomach,duodenum,pancreas and hepatic vein...
another one that display the alimentary canal,related organs, and their veins.
another one that displat the alimentary canal,related canal,related organs, and their arteries.
those 3 mentioned above are related to mammalian digestive system.
Apart from those, i also need to draw 3 more for mammalian circulatory system..
1. a large labelled drawing to show the veins in he thoraic region of a rat.
2. a large labelled drawaing to display the arteries on both sides of the thorax.
3.a dorsal view of the heart with its blood vessels attached to it..

i would really appreciate it if anyone could provide me with these labeled drawing..

2007-08-31 18:16:18 · 3 answers · asked by yen 2 in Biology

The minimum speed of a proton to break atoms?
The minimum speed of proton+neutron to break atoms?
The same about neutrons, electrons

2007-08-31 18:11:29 · 3 answers · asked by Anonymous in Physics

Octane, C8H18, boils at 125 degrees C as compared to water, which boils at 100 degrees C. This information suggests that the dispersion forces in nonpolar octane are stronger than dispersion forces and hydrogen bonding in water.

Please explain your answer.

2007-08-31 18:08:05 · 2 answers · asked by Anonymous in Chemistry

1. ln(ln(x))=1
x=...1?
2.e^ax=Ce^bx a can not =b?

lost one this one

2007-08-31 18:01:58 · 4 answers · asked by m_carl 1 in Mathematics

I'm looking for a valve that can be electronically controlled to open and close with a diameter of 1.5'(inches) to 2'(inches) and this valve must be able to withstand 20psi. Any websites or listings of stores I can go to would much appreciated. Thank you

2007-08-31 17:55:42 · 5 answers · asked by Dead Arm 1 in Engineering

Duh?

2007-08-31 17:55:34 · 3 answers · asked by dov20051 3 in Medicine

2007-08-31 17:52:18 · 19 answers · asked by Xedrione 2 in Geography

2007-08-31 17:44:55 · 3 answers · asked by tanu v 1 in Chemistry

every time it snows the clouds same to light up and you can see at night. when it rains the clouds aren't as lite up as the snow clouds when it snows at night?

2007-08-31 17:43:58 · 6 answers · asked by nicdongui 2 in Weather

2007-08-31 17:42:14 · 9 answers · asked by peterson_c_r 3 in Astronomy & Space

2007-08-31 17:39:51 · 2 answers · asked by Anonymous in Chemistry

2007-08-31 17:36:39 · 4 answers · asked by Anonymous in Zoology

I want to show that the responses to a particular survey are different based on the respondents' ethnicities. (Likert scale questions with numerical values) How would I show that the differences are statistically significant, and identfy where those differences lie?

2007-08-31 17:32:54 · 4 answers · asked by Katie B 1 in Other - Science

e^x/(1-8e^x)

is that not ln(x)/{1+8ln(x)}??

2007-08-31 17:29:54 · 2 answers · asked by m_carl 1 in Mathematics

Running in a straight line from A to B in the rain arriving at point B.
Note that it is assumed that there is no wind and that the rain is steady and evenly distributed throughout the run.

2007-08-31 17:24:45 · 5 answers · asked by M-Squared 2 in Physics

I goofed! Aspirin helps me sleep better. I have a fever of 100 with a headache. My stomach is fine.

2007-08-31 17:21:09 · 8 answers · asked by Joyce 2 in Medicine

Hi,

I have 2 confusion which i always confuse

(1) suppose , i have a paralleogram . if a draw a digonal ....does it bisect its angle ?

I draw it in a piece of paper but i am not sure ....its bit illusive.........HOW do i convince myself regarding the result ?
whats the result ?


(2) suppose, i have a cyclic quadrilateral .........now , if i draw a diagonal , does it bisects its angle ?

I again draw it on a piece of paper.....but its bit illusive ....i cant take a conclusion.

plz help

2007-08-31 17:17:40 · 4 answers · asked by calculus 1 in Mathematics

A record of travel along a straight path is as follows:
1. Start from rest with constant acceleration of 2.05 m/s2 for 20.0 s
2. Constant velocity for the next 2.70 min
3. Constant negative acceleration 8.77 m/s2 for 4.73 s
(a) What was the total displacement for the complete trip?
m
(b) What were the average speeds for legs 1, 2, and 3 of the trip as well as for the complete trip?
m/s
m/s
m/s
m/s

2007-08-31 17:16:26 · 2 answers · asked by ags101 2 in Physics

I have a school project... I removed the muscles already but it is still not presentable... I tried everything I can... I poured hot water etc... But the sad thing is, it is not yet as clean as those frog bones sold... as much as possible I don't want to resort on buying 'cause my professor told us to personally do the cleaning... What shall I do?

2007-08-31 17:12:45 · 5 answers · asked by luizelle c 1 in Biology

The driver of a vehicle on a level road determined that she could increase her speed from rest to 50 mi/h in 34.8 seconds and from rest to 65 mi/h in 94.8 seconds. If it can be assumed that the acceleration of the vehicle takes the form du/dt = alpha - (beta)u determine the maximum acceleration in each case. Where alpha and beta are constants and u is the vehicle speed in ft/sec.

2007-08-31 17:11:41 · 2 answers · asked by tegra977 1 in Mathematics

72 inches long, 12 inches in width, 18 inches deep, how many gallons?

2007-08-31 17:10:34 · 6 answers · asked by nikki69falls 1 in Mathematics

I mean do you study the same things and can get the same careers?

2007-08-31 17:08:41 · 2 answers · asked by jumpergirl3005 1 in Zoology

avocados are 125 pesos per kilogram. what is the cost in cents of an avocado that weighs 0.45 lb if the exchange rate is 11 pesos to the dollar?

2007-08-31 17:08:21 · 3 answers · asked by devilishly curious64 1 in Chemistry

the problem says to choose the group which the numbers go into. then it says random terms like 2567 and pi. Dial get it. chow thinkorton you could hayelp?

2007-08-31 17:05:43 · 2 answers · asked by underdog925 2 in Mathematics

2007-08-31 17:03:56 · 4 answers · asked by 22 4 in Astronomy & Space

2007-08-31 17:03:03 · 2 answers · asked by Anonymous in Chemistry

2007-08-31 16:58:58 · 6 answers · asked by Anonymous in Physics

What is the importance or significance of performing a mixing study in patients who presents with isolated prolongation of aPTT?

2007-08-31 16:58:38 · 1 answers · asked by cometoid 1 in Medicine