Engineering - October 2007

and F0 is the preload. Determine the work required to compress a spring whose spring constant k=200 lbf/in a distance of one inch starting from its free length where F0=0 lbf. Express in lbf ft and Btu.

2007-10-08 08:29:17 · 2 answers · asked by s4_orce 1

Is it fair, right and okay to build a physics project using a how to build your own guide. My teacher said we can't buy any kits that have all the materials ready to build but is it okay to buy a guide explaining how to build it if they give us the materials. Is it still moral and right. I am having trouble with this. Please Help!!!!

2007-10-08 08:13:07 · 7 answers · asked by mc_vikram21 1

a carpenter is constructing a window. if the width of the frame is 1 1/4 inches and the width of the glass is 6 3/8 inches what is the total width of the window?

2007-10-08 07:55:57 · 4 answers · asked by girly girl 2

2007-10-08 07:51:21 · 4 answers · asked by Petro 1

2007-10-08 06:56:07 · 3 answers · asked by Kai K 1

free surface of a large water reservoir that can supply water at a rate of 1500 kg/s steadily. Determine the power generation potential

2007-10-08 06:53:51 · 1 answers · asked by Kai K 1

Controversy on the risks and benefits of Kevlar? What are the indirect risks?
Is there a similar product that exists? And what are the better ways to manufacture/dispose of Kevlar?

Any answers would be greatly apprecitated. Thanks

2007-10-08 06:44:40 · 3 answers · asked by Anonymous

I want to be an Engineer, I don't know what kind yet- but most likely a computer hardware engineer.

2007-10-08 05:43:49 · 12 answers · asked by 4evaluvmuzic 2

A) how much potential energy does that have after being lifted
B) it took 5 sec to lift the crate using machine what is the power rating of the machine

2007-10-08 05:31:57 · 1 answers · asked by km 2

2007-10-08 04:51:52 · 2 answers · asked by PETER Kin 1

2007-10-08 04:51:17 · 6 answers · asked by Anonymous

What is the relation between number of samples and sampling frequency?

2007-10-07 23:47:03 · 5 answers · asked by Laddu G 1

for electrical engineering subject

2007-10-07 23:37:47 · 3 answers · asked by juben 1

How I can remove colour of water for water treatment?

Which is the best coagulation & Flocculation Agent?

Up to what micron size the reverse osmasis filter remove the contamination?

2007-10-07 23:33:41 · 2 answers · asked by sathish p 1

What does eigen value and eigen vector means? Why is it important to calculate them? Is there any practical application which will make me to understand its use?

2007-10-07 23:26:08 · 5 answers · asked by Anonymous

what is the range of power we can transfer for 3 phase 3 wire & 3 phase 4 wire system & why?

2007-10-07 19:15:24 · 9 answers · asked by deepak_8584 1

A worker is raising a 9.2 meter long ladder of mass 53 kg as shown. Knowing that the force exerted by the worker is perpendicular to the ladder determine
(a) the smallest value of 'a' for which the vertical component of the reaction at B is zero
(b) the corresponding force exerted by the worker

Diagram:
http://i231.photobucket.com/albums/ee84/janise87/72.jpg

2007-10-07 18:39:14 · 1 answers · asked by Anonymous

Is it possible to build a load bearing glass wall?

2007-10-07 18:10:09 · 5 answers · asked by Young 1

To make an electric magnet they say you need a battery, wire and a nail but can a person make one without the battery? Like from a power cord of some sort? This is vert important - its for school.

2007-10-07 16:28:00 · 11 answers · asked by George W 1

Hello,
i wish someone give me an answer.
how can i find the corruct formula for calculating the Corrugated Cardboard square meter (area)?

2007-10-07 14:46:04 · 2 answers · asked by sam a 1

I am looking for a heat safe type of material regardless of plactic or fabirc.. that can be used in an invention or project.. please advise....

2007-10-07 10:20:24 · 2 answers · asked by alanin28 1

power is generated. The overall efficiency of the turbine-generator is 80 percent. Disregarding frictional losses in piping, estimate the electric power output of this plant.

2007-10-07 07:40:57 · 1 answers · asked by s4_orce 1

please suggest a cheap/shareware/free software to analyse the manufacturing process, and do line balancing.

2007-10-07 06:49:51 · 1 answers · asked by S N 1

2007-10-07 06:34:00 · 1 answers · asked by Anonymous

2007-10-07 06:03:42 · 3 answers · asked by Anonymous

I've thought about building a Tesla coil but that requires a fly-back transformer of which there's one in an old TV and another in a computer monitor that's seen its day.

I know these things retain voltage long after unplugged. With the proper precautions, is it safe to extract these and build a Tesla coil?

2007-10-07 05:57:51 · 6 answers · asked by rann_georgia 7

I am doing a project about "Use of Batteries as Power Sources", but I cannot think of anything that is using batteries as HIGH DC power sources or as a back up power for.

1) Can anyone give me more examples of what equipments, nowadays or in the past, use High DC voltage or DC energy. (NOT things about MP3 etc)

For example, 90 V DC would power a vintage valve portable radio.
Car battery would need to step up the voltage from 14V? to ????volt to make a spark for starting an engine, these kinds of things.

2)Can anyone suggest any websites that supply knowledge of what high DC power can do? (better if there are pictures and professional information)

3) Any suggestion for what equipments are needed or would be good if they use DC power in the future?

2007-10-07 05:46:45 · 2 answers · asked by Question Boy 1

what is james watt famous for.This is for my physics homework, the answer has to do with something about energy.Thanks guys!!

2007-10-07 05:32:59 · 4 answers · asked by Anonymous

i really mean from scratch and then fully master it and be able to make at least some small scaled robots like micromouse or to play football,etc

2007-10-07 03:54:43 · 3 answers · asked by kishore r 1

I am a metallurgical engg. student stdying in 3 rd year at jadavpur university
what shold i opt for.......
1.take software jobs
2.take core sector job
3.go for higher studies

2007-10-06 23:13:32 · 3 answers · asked by Ashis 1