Science & Mathematics - 3 December 2006

An inductor with an inductance of 50 uH passes a current of 20mA when its terminal voltage is 6.3 V. Calculate the frequency of the AC supply.

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2006-12-03 16:04:40 · 2 answers · asked by element69ca 1 in Engineering

Ok, I have a test tommorow and I don't know how come mercury rises up to 76cm because of atmospheric pressure, what's the working(calculation). Help plz.

2006-12-03 16:04:21 · 4 answers · asked by Mike 4 in Physics

OK I'm really bad at this stuff if you can help me I would totally appreciate it.

an excursion boat takes 1.5 times as long to go 360 miles up a river than to return. if the boat cruises at 15 mph in still water, what is the rate of the current?

2006-12-03 16:03:20 · 4 answers · asked by Penny C 1 in Mathematics

2006-12-03 16:03:18 · 4 answers · asked by blondie_yvette 1 in Mathematics

I want to have a snowball fight!

2006-12-03 16:01:46 · 5 answers · asked by Cutie P 1 in Weather

2006-12-03 16:00:37 · 6 answers · asked by Butta 1 in Weather

2006-12-03 15:58:40 · 3 answers · asked by Anonymous in Chemistry

6.25 g of solid NaOH are dissolved in water to give a final solution of 21.0 mL.

2006-12-03 15:57:56 · 1 answers · asked by Anonymous in Chemistry

examples are....

asteroid
mooncrash
alien invashion
global warming
sun too powerfull
sun explodes
meteor
comet strikes

2006-12-03 15:56:46 · 15 answers · asked by Anonymous in Astronomy & Space

how does cytokinesis differ in plant and animal cells?

2006-12-03 15:55:29 · 4 answers · asked by Sarah 1 in Biology

if the average human only uses 10% of availiable brain power what's going on in the other 90 %?. does it contain the tools we need to repair ourselves indefinitely?

2006-12-03 15:54:01 · 10 answers · asked by 376hunter 1 in Medicine

In this video, former Chief Astronomer of the US Naval Observatory Tom Van Flandern, Ph.D. shows new pictures of what appears to be artificial structures on mars taken by the Mars Global Surveyer. Again the link is:
http://www.youtube.com/watch?v=5u-20g7Bwdw

2006-12-03 15:53:51 · 3 answers · asked by jrels2 2 in Astronomy & Space

Just wondering, are humans flammable?

2006-12-03 15:53:16 · 15 answers · asked by Anonymous in Other - Science

how?
what time can he have this feel?

2006-12-03 15:52:00 · 3 answers · asked by Anonymous in Engineering

If you dont like the conventional theory, give me your own.

2006-12-03 15:51:14 · 8 answers · asked by Master John 1 in Physics

when plotting (3,2) do you go up first or over first?

2006-12-03 15:49:33 · 3 answers · asked by Anonymous in Mathematics

2006-12-03 15:47:23 · 5 answers · asked by Qasim 1 in Physics

i checked every where but cant find directions

2006-12-03 15:46:40 · 2 answers · asked by Denis 2 in Earth Sciences & Geology

2006-12-03 15:46:32 · 2 answers · asked by victoria j 1 in Biology

the daughter nucleus__________.
ex) increase, decrease, remain the same..
why?

2006-12-03 15:44:00 · 1 answers · asked by frickenawesomekoreanandyouknowit 2 in Chemistry

I just checked everywhere in my textbooks to find out exactly what the "Zero Method" is, and what do ya know... it's not in there. I'm supposed to use the Zero Method to find the coordinates of an equation. Can someone please exlplain to me exactly what the Zero Method is so I can go on with this math? =P
~Thanks in advance!~

2006-12-03 15:43:45 · 5 answers · asked by glitteringfairywings 2 in Mathematics

2006-12-03 15:39:03 · 5 answers · asked by Starwars24 2 in Mathematics

f: x -> 4x³ - x² - 3x

I can't seem to get this right. I'd really appreciate some help :)

2006-12-03 15:38:56 · 5 answers · asked by Foxglove 2 in Mathematics

Im curious.

2006-12-03 15:37:46 · 2 answers · asked by Anonymous in Weather

2006-12-03 15:35:58 · 7 answers · asked by i can fly 2 in Astronomy & Space

aromatic substitution?

please no sarcastic answers

2006-12-03 15:33:07 · 3 answers · asked by kelxcore09 1 in Chemistry

A 60 mH inductor passes a current of 200mA when connected to a 400 Hz supply. Calculate the supply voltage.

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2006-12-03 15:32:54 · 2 answers · asked by element69ca 1 in Engineering

I'm doing my final year project to isolate and identify nitrogen fixers. Can anyone recommend me links for journals or whatever good information to help me in this.Thank you so much

2006-12-03 15:31:57 · 1 answers · asked by pumpkinism 3 in Botany

Heres what I have to do:

Write the equation of the line that passes through point (-3,-5) and (3,0).

First I found the slope:

m = [0 - (-5)] / [3 - (-3)] = 5/6

I'm having trouble finding the y-intercept from the coordinates given. Help is much appreciated! Thanks in advance : )

2006-12-03 15:28:41 · 9 answers · asked by glitteringfairywings 2 in Mathematics

2006-12-03 15:28:21 · 5 answers · asked by tyro 1 in Engineering