Engineering - November 2006

Within a hard drive is one or more very powerful magnets that control the movement of the heads. However, they don't erase the "magnetic data". Also, hard drive platters are made from stainless steel (which is non-magnetic). So how is magnetic data stored on non-magnetic material? And why are there incredibly stong magnets used internally within a hard drive? I am highly trained in electronics. Most of my electronics instructors would blame it on FM ("Freaky Magic"). Does anybody have a better answer. I'm close to believing in alien technology!

2006-11-22 14:31:28 · 9 answers · asked by ItsThatSimple 3

2006-11-22 14:23:02 · 1 answers · asked by barbara b 1

120 volts 7.5 amps
need to run on generator that is watts

2006-11-22 13:59:34 · 2 answers · asked by Anonymous

2006-11-22 13:54:39 · 11 answers · asked by Anonymous

Where is he?

2006-11-22 13:31:49 · 2 answers · asked by Anonymous

2006-11-22 10:56:16 · 7 answers · asked by Anonymous

Please if you know how to or know a website that gives good detail for this please list.

2006-11-22 10:22:47 · 1 answers · asked by montana 1

Specific material names of steel, rivets, bolts concrete and other materials needed.

2006-11-22 09:53:34 · 3 answers · asked by Anonymous

Use the following image for the questions
http://geocities.com/atomiccobra/figurea1.gif



1. Look at the circuit illustrated in Figure A-1. Assume that the values of R1 and R2 are equal. If you connect your meter's test probes to points A and B in the circuit, which of the following voltages would you measure?
A. 9 V
B. 6 V
C. 3 V
D. 0 V

2. In the circuit shown in Figure A-1, where would you connect your meter's test probes to measure the full battery voltage?
A. To points D and E, or to points B and E
B. To points A and C only
C. To points D and E, or to points A and C
D. To points B and E only

3. In the circuit shown in Figure A-1, suppose that the value of R1 is 100 kW and the value of R2 is 470 kW. At which of the following locations in the circuit would you measure the highest voltage with your meter?
A. Between points A and C
B. Between points A and B
C. Between points B and C
D. Between points B and E

2006-11-22 09:45:36 · 5 answers · asked by atomiccobra 2

A running track in the shape of a annulus...the running track has an area of 1000m squared the width of the track is 10m what is the radii of the circles forming the edges of the track???? plz help bin tryin ages and am lost!!!!

2006-11-22 09:28:52 · 10 answers · asked by Anonymous

those small generators they were small enough to be carried around by hand, you placed a small object such as news paper in a tray, then set it on fire and it used the steam to create enough movment to power a small bulb, we were showed this im school does any one remember these and what were they called

thanks

2006-11-22 08:35:54 · 2 answers · asked by csnape2003 3

2006-11-22 07:59:51 · 2 answers · asked by stellafox 1

2006-11-22 07:58:08 · 1 answers · asked by stellafox 1

2006-11-22 07:55:33 · 7 answers · asked by stellafox 1

2006-11-22 06:56:18 · 1 answers · asked by Anonymous

2006-11-22 06:37:06 · 4 answers · asked by Anonymous

2006-11-22 06:32:06 · 2 answers · asked by Anonymous

7z^(2)+17z+21=0

2006-11-22 06:30:11 · 4 answers · asked by oss o 1

I need to find some powerful magnets and some weak ones. If you can help thanks.

2006-11-22 05:52:57 · 4 answers · asked by devilrider1358 1

what are some trick to learn faster and do a better job

2006-11-22 04:39:36 · 3 answers · asked by Anonymous

Why cant we use electromagnetic fields to produce current in a distant conductor. whenver a EM wave is incident on a conductor a surface current flows in the conducto. what is the magnitude of the current for an ordinary cell phone wave. and what is equation governing this current density if we have the magnetic field? If this is not possible I need some reasons.

2006-11-22 03:05:02 · 4 answers · asked by abelgladstone 2

2006-11-22 03:03:21 · 0 answers · asked by Sendibad l 1

2006-11-22 02:53:50 · 7 answers · asked by Anonymous

2006-11-22 02:07:46 · 7 answers · asked by Anonymous

2006-11-22 01:49:46 · 2 answers · asked by Anonymous

i have a paper on welding. and i don't know anything about it...!(not really!i know how it's done but i never learned the words for what i did!) i don't know the professional words in the biz, shall we say...! does anyone know anything about it? a website also would be really helpful.
there were two kinds we did, for one we used electricity and the other one we used gasses(O2 and C2H4 )
what are they called? what was the whole hammering thing about?(for electricity! i think there were some electrodes that we used and they had a layer or something...! God i'm hopeless!:(( )
(i'm in university,engineering, and we had a course. not in english,so now that i'm surffing the web trying to find something for that course, i don't know any of the words in english!so i need help asap!)

2006-11-22 00:56:34 · 5 answers · asked by sweetdreams 2

2006-11-21 23:45:48 · 1 answers · asked by sarah s 1

2006-11-21 23:31:45 · 3 answers · asked by moHsen m 1

u=initial velocity(m/s)
t= time in seconds(s)
v=final velocity(m/s)
s=distance travelled(m)

2006-11-21 21:44:48 · 6 answers · asked by Anonymous

what're the important characterisitcs that is detrimental to the cement quality? is there a makeshift procedure/method that can be used instead to test for such characteristics?

2006-11-21 20:51:20 · 2 answers · asked by crimsiris 2