Engineering - October 2007

2007-10-12 20:27:58 · 5 answers · asked by vivu 1

2007-10-12 19:18:49 · 4 answers · asked by deepak_8584 1

All right, this is a question that I've wondered about for a while but never devoted the brain cells to answering...

Say you already have a stockpile of incandescent lamps (i.e. light bulbs) in the basement. Is it more cost efficient in the long run to burn your current stockpile of incandescents or go out and purchase compact fluorescent lamps? (Assume that the fixtures in question are used less than two hours per day.)

Also, please answer as to winter usage v. summer usage. (Meaning, during winter a 100 watt incandescent lamp will help to heat your house more than the equivalent light output of a compact fluorescent), plus the electricity rate in winter tends to be lower than summer.

Thank you in advance for your well-thought-out and mathematically and engineering sound responses. Please also take into account future value v. present value of money. And no, this is not a homework problem. Only a mind as demented as mine could come up with this.

2007-10-12 17:20:26 · 3 answers · asked by Ralleia 3

complete detail like how aircraft work, maintance period of aircraft, which material aircraft consist of,how aircraft run,how much of internet speed o person can availfrom this internet technology.

2007-10-12 14:21:26 · 1 answers · asked by zero_nirmal 1

the motor is from an old air compressor. i want to modify it to run on 120 volts. I know it can be done. I JUST DON'T KNOW HOW = )

2007-10-12 13:38:00 · 8 answers · asked by manolin923 2

I have a skull-buster of a problem. Running at 57,600 baud the transmitter side works perfectly but the receiver doesn't seem to recognize an incoming character. I know the transmit interrupt is working since the interrupt handler (on a simple 8051 CPU) is capable of driving a string of characters out and they are received OK. But sending a character (or a string of characters) back into the UART fails to produce an interrupt (I've watched the interrupt pin with a logic probe on both transmit and receive). Both of the interrupt enable bits (bits 0 and 1) are set in the UART interrupt enable register, and I'm certain the character coming in is good (a loopback test to the far-end sender works just fine). The baud rate has to be correct (since the same clock drives the receiver as the transmitter), and I'm just kinda stumped. The same code I'm using to initialize it is known to have worked (about 4 years ago) in another application using the same UART.
Any thoughts??
HELP!!!!

2007-10-12 13:26:50 · 2 answers · asked by doug_donaghue 7

2007-10-12 11:30:25 · 6 answers · asked by alatheaescapedez 1

And how does anyone with common sense believe the media and not architects, engineers, pilots, demolition experts, and scientists???? No, the people at popular mechanics know all! LOL, LMAO,ROFL. Freefall in the path of most resistance!! DE DE DEEEEE LOL, LMAO

2007-10-12 10:49:46 · 6 answers · asked by stonehouse421 2

These four careers are most interesting to me. i don't know which one to choose. So i would like to know who make more money Biomedical engineer, mechanical engineer, RN, Chemical engineer and in these four choices which job do you think i will get right after getting out of college. In other words which job is the fastest growing jobs in the USA

2007-10-12 10:05:15 · 13 answers · asked by nikki 2

Chem help! What is the name for Al2(SO3)3 and SnO2. Please help! Thank you!

2007-10-12 09:45:24 · 4 answers · asked by MJ 1

Me and a friend have a science project coming up about building steam powered machines and we had heard about steam guns so we were wondering if anyone knows hows to buld one or knows of any websites with instructions on building your own steam gun?

2007-10-12 09:45:04 · 2 answers · asked by mitchell c 1

Can anyone tell me how to figure or what is the RF decibel level for a 20 gauge single core wire?

2007-10-12 09:10:51 · 4 answers · asked by hiegeldeserteagle 2

2007-10-12 08:38:57 · 7 answers · asked by Anonymous

Does anyone know if a master list of FDA approved building materials exists somewhere? Specifically I am trying to find out if grade 202 stainless steel is FDA approved.

2007-10-12 08:29:22 · 5 answers · asked by aduerwachter 1

2007-10-12 08:28:41 · 7 answers · asked by Anonymous

The Gold and Platinum recovery process

2007-10-12 08:18:27 · 5 answers · asked by hoody 1

this is for my school project

2007-10-12 07:58:44 · 3 answers · asked by phil 2

2007-10-12 05:57:26 · 4 answers · asked by Anonymous

2007-10-12 05:38:04 · 7 answers · asked by Anonymous

we have the milleage of a car example a maruthi car or other branded car is having approx. 12 to 20milleage , or a bike of 50 to 60 milleage on road. what is the milleage of an aeroplane or jet in air.

2007-10-12 04:55:08 · 3 answers · asked by khanimran_1432002 1

The relationship, PV = nRT, for constant temperature, would indicate a linear relationship during compression. However, my foreign professor is unable to explain to me why he is teaching me that the line is not linear in a P-V diagram.

2007-10-12 04:27:52 · 4 answers · asked by Alex W 1

2007-10-12 03:50:01 · 2 answers · asked by hey 1

science fair

2007-10-12 03:43:28 · 9 answers · asked by runescape player 2

certainly it can't be compressed as air resistance will be too much or am i wrong! please help me sir i reallly am in the need of help

2007-10-12 03:41:45 · 6 answers · asked by hey 1

When high pressure gas reduced to low pressure , condensation & chilling effect obseved outside gas pipe line. pl explain it thanks in advance.

2007-10-11 19:41:41 · 5 answers · asked by amshaikh748 1

Well I'm doing my senior project on aviation instrumentation engineers (crazy long name with even crazy stuff involved) But i was curious is there anyone that is on that could possibly help me . I need to know some examples of instruments they use particularly for test flight I don't really need to know what they do there is Google for that.

2007-10-11 19:36:45 · 1 answers · asked by PookieBear 1

I understand that microwave ovens emit non-ionizing microwave radiations which are of no harm to health

But some medical instruments use ionizing microwave radiations

Also, I read that ultraviolet rays are ionizing radiations which cause cancer. Hence long time exposure to ionizing radiation is bad.

Is there a possibility of microwave oven, due to overuse and bad condition, might emit ionizing microwave radiations?

2007-10-11 16:59:01 · 2 answers · asked by mohan k 1

2007-10-11 16:53:12 · 5 answers · asked by Anonymous

2007-10-11 15:05:37 · 3 answers · asked by superstar 1

2007-10-11 14:26:27 · 7 answers · asked by captncurt151 1