Engineering - February 2007

I live in a small 2 bedroom house. Last summer, we ran two 5,000 BTU 120 V. Air conditioners and my electric bill ran about 160 a month, but the house stayed cool.

We are considering buying a 220 Volt Air conditioner. With our small size house, would a 220 volt really save us all that much on our electric bill, or should we save the money?

I'll keep checking this question, so if you need further information please let me know.

2007-02-26 11:36:09 · 4 answers · asked by i_just_wondering 1

2007-02-26 11:32:37 · 3 answers · asked by Bitz 1

If you had several identical metal balls mounted on insulating stands, explain how you could obtain a quantity of charge on one ball that is four times as large as the quantity on another ball.

2007-02-26 10:20:22 · 1 answers · asked by bibun 2

I have two very difficult physics electricity circuit questions that i have been trying to do for the past few hours. Can someone please try them and show your work so i can understand what you did to solve the questions.

R stands for Resistance!
V stands for Voltage!
I stands for Current!

The "Re" is the sum of all the resistance in the circuit.

They are posted on this webpage:
http://piczo.com/mohamadatwy?cr=1&rfm=y

2007-02-26 10:19:48 · 5 answers · asked by many men 1

2007-02-26 10:07:11 · 2 answers · asked by tiffany s 1

Engineers are designing an auditorium that will be used for performances by orchestras. What must they do to maximize the loudness of the sound heard by the audience?

a. hang curtains behind the orchestra
b. put carpet around the walls of the auditorium
c. hang reflecting panels from the ceiling behind the orchestra
d. install narrow glass windows and skylights around the top of the walls

2007-02-26 09:57:06 · 5 answers · asked by Anonymous

Don't they know it takes more space to come to a stop when the road is wet, unless they have more insurance and don't care if they do kill someone and their children?

2007-02-26 09:57:02 · 5 answers · asked by somber_pieces 6

For my science project we have to do an egg drop priject. THe maximum weight is 40 grams which is about 40 paper clips which isnt that much. YOu also can only use paper, straw, rubber bands and one mystery material, but it cant be packing material like bubble wrap. Does anyone have any ideas, or examples! Anything would help!
Thanks

2007-02-26 09:37:50 · 4 answers · asked by Anonymous

my question is exactly that: what are the functions of a screw? if you have website names that would be great.

2007-02-26 09:29:13 · 3 answers · asked by soccerphyco13 1

I would like to "get out of the box", meaning a cubicle. Can't take it much more. Does anyone know of a job that deals with the public that can utilize my technical skills? I don't mind taking a small pay cut but I have two kids to feed and need to find something that will pay close to what I make now. I'm lucky, in that I get to work with smart people, but the cubicle enviroment is going to make me go insane pretty soon. Any suggestions?

2007-02-26 08:38:58 · 3 answers · asked by leftbrainedgirl 2

2007-02-26 07:49:56 · 6 answers · asked by bowland21 1

2007-02-26 07:25:37 · 5 answers · asked by Abdur Rehman 1

Amplitude MOdulation Broadcast Stations (AM) east of the Mississipit start with W (except for KDKA) and those West of the Mississippi AM Radio Stations begin with the letter K? Is it a law or only a t radition? If it's a Law, please provide citation.

2007-02-26 07:21:42 · 7 answers · asked by l.barile 1

I am a student looking to build an oil water separator for a project, and am thinking I will use the vortex design, but I have a question. How do you get the oil out of it? I understand that the water will go to outside and create a cone, and that the water will thus naturally go down bottom hole while oil will go to center. But how do you remove the oil? Will it simply spill out of cone? Or do I have to put something there to suck it out? And how do I prevent the last of the oil from going down bottom hole when water flow stops? Your help is much appreciated.

2007-02-26 07:09:23 · 1 answers · asked by Anonymous

2007-02-26 07:00:27 · 1 answers · asked by Anonymous

2007-02-26 06:22:09 · 10 answers · asked by sheikh n 1

how can I solve the separable differential equation
ydx - (1+x)dy = 0
can you explain me step by step?

2007-02-26 06:07:36 · 1 answers · asked by azulita 3

Does anyone know where I can get schematics and plans for a dc to ac invertor? 1kw seems like a good size for my needs, but I would go bigger or smaller if I needed to.

2007-02-26 06:03:28 · 3 answers · asked by Killer B 2

1) Need to find out the various concepts of variable data printing.
2)How its done?
3)what are the present and future applications?

2007-02-26 06:02:36 · 1 answers · asked by ashish s 1

In a fire alarm system would each break glass call popint be wired individually back to the control panel or would they be wired in series? What way would Smoke detectors be incorporated into the system and bells. I have 3 smoke detectors in the building and also a heat detector and carbon monoxide detector in the kitchen all interconnected and mains operated.

Would it be best practice or a regulation law to have these changed and incorporated into the control panel and if so would i have to change the wiring so they recieve their supply from the control panel?

Sorry if this is confusing i have worded it the best I can!

Cheers

2007-02-26 05:56:45 · 4 answers · asked by Mark W 1

a. 0.125 ohms
b. 1800 ohms
c. 8 ohms
d. 16 ohms

2007-02-26 05:27:12 · 8 answers · asked by kacwccj 3

I have a 12 volt light that I want to dim using a wall dimmer switch. 110 Dimmer -> 110 Outlet -> AC/DC Converter -> 12 volt Light.

2007-02-26 05:12:44 · 3 answers · asked by John 1

Hi! can someone advise me how to check if a motor is open circuit using a mulit meter, i have not been using it for sometime.
Is it by measuring the the motor phase to phase for continuity and if one phase does not have continuity that means the motor is open circuit?

2007-02-26 03:40:19 · 3 answers · asked by chew b 1

What is the force of electric interaction between a copper ball
of radius R carrying net charge +Q, and a point charge +3Q
located at distance 2R from the center of the ball?

2007-02-26 03:31:13 · 1 answers · asked by Alexander 6

2007-02-26 03:07:04 · 3 answers · asked by praveen k 1

I need a website to back up your answer please.

2007-02-26 02:56:09 · 4 answers · asked by bob_smith_6666 1

2007-02-26 02:49:55 · 1 answers · asked by Keerthi M 1

I need a website to back up your answer, please.

2007-02-26 02:49:36 · 3 answers · asked by bob_smith_6666 1

I need a website to go with your answer, please.

2007-02-26 02:45:56 · 4 answers · asked by bob_smith_6666 1

I need a website to back up your answer, please.

2007-02-26 02:40:29 · 2 answers · asked by bob_smith_6666 1