Engineering - December 2006

Earlier today in my science class we were discussing cathodes and anodes, The book I was reading (Glencoe Science) said that the anode had a positive charge where as the dictionary and my teacher said the opposite. I figure an= anti = negetive I really don't know!!!!

2006-12-04 14:26:12 · 6 answers · asked by bubear_1293 1

Im doing a persuasive essay on genetic animal engineering for school.
im against it.
i need some facts or websites to help me please.
thank you

2006-12-04 14:01:33 · 1 answers · asked by Anonymous

Hi,

I am looking for a source of tiny (e.g. 2mm x 1mm x 1mm) surface mount
leds that blink.

I know that circuits can be constructed for this purpose but I assume
that if you can buy larger bulb type leds that flash that the work may
already have been done and miniaturized for a surface mount product.

The flash length and dwell time is not really important to the purpose.

Thanks for any leads :)

CP

2006-12-04 13:56:00 · 3 answers · asked by cp s 2

I have searched all day but can't find a clear answer anywhere?Please help! Thanks!

2006-12-04 13:41:11 · 7 answers · asked by Margaret K 1

this is for a 7th grade science expiriment

2006-12-04 13:40:39 · 4 answers · asked by Amy 2

i am building a smal vehicle for an engineering project. i am using two sets of wheels, very small ones, (less than an inch in diameter) and very large ones (compact discs), which wheels are supposed to make it roll down an incline faster?

2006-12-04 13:36:15 · 6 answers · asked by Twon 2

In my technology class, I'm working with lasers, and the supply bin includes a lucite rod. It's a curved clear stick thing and I don't know what it does. What does it do?

2006-12-04 13:26:20 · 3 answers · asked by ZZ 4

What restictions need to be applied?

2006-12-04 13:15:25 · 1 answers · asked by Frank L 2

A firefighter friend of mine has this question. If they had a tank 8'diam x 13' long with a 6" diam line from it down to the ground, what would the flow be when they open the valve? The bottom of the tank would be 11' off the ground, it is a gravity fed system. Assume two 90s for fittings, standard cs pipe (if required), I don't need it to the thousandth of a gpm :)

a) What is the flow (gpm) from the tank when full?
b) What is the flow (gpm) from the tank with 1" of level?
c) What is the time to empty the tank completely (starting from full)?

Thanks all.

2006-12-04 13:09:26 · 2 answers · asked by Mukluk 2

2006-12-04 12:47:34 · 1 answers · asked by Anonymous

i run a bar in tenerife and a customer reckons that they where made from originally from rail road tracks can anyone help in this discussion?

2006-12-04 12:43:37 · 5 answers · asked by jaydeelfc_15 1

2006-12-04 12:25:08 · 5 answers · asked by dmb 1

2006-12-04 12:17:21 · 2 answers · asked by perriwinkle40 1

2006-12-04 12:15:53 · 2 answers · asked by blondy347 1

Features I need are:
1. Structural carbon steel construction for welded installation in 12-inch steel pipe.
2. One swivel axis, with at least one single row ball bearing with hardened steel tracks.
3. Sealing surfaces shall be stainless steel to protect against corrosion.
4. Seal replacement, ball replacement, and relubrication is possible without removing the swivel from the pipeline.

Does such a thing exist?

2006-12-04 11:55:35 · 2 answers · asked by lufen 3

i need an idea for an invention

2006-12-04 11:49:44 · 17 answers · asked by Rebecca A 2

it's for an english assignment

2006-12-04 11:44:56 · 3 answers · asked by Anonymous

it's for an engllish assignment.

2006-12-04 11:36:43 · 1 answers · asked by Anonymous

or its just equal to all pulley drag no diffrence about 5 lb

2006-12-04 10:39:03 · 3 answers · asked by aqua 4

There is a very long suspension bridge is the Humber Estuary bridge in England, just short of 1 mile long between the supports. The two towers are not quite parallel. They are 1.375 inches farther apart at the tops than at the bottoms. Why?

2006-12-04 10:15:05 · 4 answers · asked by Chris H 2

I have always been told that two or three statndard building 2x4's are exponentially higher in strength than its stand alone comparison- (the total is greater than sum or it parts) and an answer is usefull not only for building knowelege but as an analogy for teamwork- this is my currenmt interest in this factiod, so I can use it in a presentation that is stressing strenght in numbers. Thank you in advance! (ps. spent 1/2 hour on the web and cannot find)

2006-12-04 10:01:52 · 6 answers · asked by Jared F 2

antenna tower refered for a cb antenna to hold vertical or horizonal beam antennas that can weigh up to 30 to 70 pds.

2006-12-04 09:29:32 · 1 answers · asked by ltnscorpionking 2

demanufacture in engineering

2006-12-04 09:18:50 · 2 answers · asked by Anonymous

I want to build a hovercraft for my science fair project but i dont know i can phrase a question to make it like a project. Could someone give me some help?

2006-12-04 09:06:45 · 4 answers · asked by Anonymous

metal working

2006-12-04 07:56:02 · 6 answers · asked by dougie 1

2006-12-04 07:54:10 · 2 answers · asked by ENG.MOHAMED 1

metal working

2006-12-04 07:54:05 · 2 answers · asked by dougie 1

2006-12-04 06:51:39 · 11 answers · asked by vedo211 1

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

I've heard that 7018 rods should be used within 4 hours of opening. I have a tube that has been opened for longer than that and probably exposed to the atmosphere for longer. I don't have a rod oven, but my "home oven" goes up to 500 degrees and I've read that 500 degrees for an hour will do the trick. I am concerned about fumes from the flux, but other than that I see no reason why I should not be able to "rebake" these rods in my home oven.

Please list any sources you find or know of.

Thanks for your help in advance!

2006-12-04 05:14:34 · 6 answers · asked by Michael C. 2