Engineering - October 2007

When an Aeroplane passes over land at supersonic speed, It send vibrations on land, What is that affect called?

It is for the same reason that Concorde went out of service

2007-10-02 09:41:58 · 6 answers · asked by Anonymous

i just started to learn drafiting for architecture in autocad and on our computers at school, when you draw a line you can drag it in the direction you want it to go and then type in how many feet you want it to go (ex: 3'). when i try to draw a line on the same version of autocad at home (2008), when i type in 3' a red box shows up around it and i doesn't work! under "drawing units" i have all the same settings: architecture, inches, decimel degrees, etc. what's going on??

2007-10-02 08:55:26 · 5 answers · asked by svargabell 2

what is the physical meaning of poles and zeroes 4 characteristic equationof transfer function?what the change happens after a change in poles or zeroes?

2007-10-02 08:54:00 · 1 answers · asked by RAMY DIAB 1

For science I'm supposed to drop an egg out of a 9.8 meter high window. What can I put the egg in to protect it from cracking?

2007-10-02 08:14:14 · 8 answers · asked by mariah L 1

A. protons
B. electrons
C. diodes
D. neutrons

2007-10-02 07:36:32 · 5 answers · asked by Felica0429 1

A follower ABCD is held against a circular cam by a stretched spring which exerts a force of 6 lb for the position shown. Knowing that the tension in rod BE is 4 lb, determine
(a) the force exerted on the roller at A
(b) the reaction at bearing C

Diagram:
http://i231.photobucket.com/albums/ee84/janise87/16.jpg

2007-10-02 05:38:04 · 1 answers · asked by Anonymous

2007-10-02 05:32:38 · 4 answers · asked by Anonymous

2007-10-02 05:11:27 · 4 answers · asked by Michael H 1

Use Ohm's Law to find the amount of current that would flow in a circuit that contains a 10 (V) source and a 4 k resistor.

a) Do the terms in Ohm's Law need to be manipulated to solve the problem? Explain.

b) In your opinion, would it be simpler to manipulate Ohm's Law to solve for the unknown variable and then insert the given values, or to insert the given values and the manipulate the equation to solve for the unknown? Explain.

c)Find the amount of current flow that would be generated by the given voltage source.

2007-10-02 04:29:14 · 3 answers · asked by contentryder 1

2007-10-02 03:51:59 · 1 answers · asked by JAMES P 1

2007-10-02 03:38:31 · 6 answers · asked by Anonymous

2007-10-01 21:02:06 · 2 answers · asked by itai d 1

2007-10-01 20:03:27 · 3 answers · asked by alaa a 1

i have come up with some kind of an idea for a metal shed and i want to mass produce it . so where do i turn for a start?
i was thinking of a custom metal fabrication company but they might not be the right choice for mass production

2007-10-01 16:34:21 · 1 answers · asked by Shie W 1

so it can be used for domestic distributation

2007-10-01 16:15:10 · 4 answers · asked by Dallas B 1

2007-10-01 14:04:49 · 2 answers · asked by Amy K 5

2007-10-01 13:27:16 · 2 answers · asked by modi_ponens 2

tensile strength of diamond?

resistance to pressure (diamond container 1cm thick spherical)?

2007-10-01 13:05:06 · 1 answers · asked by Anonymous

How do you measure the energy in an ELECTROMAGNET and can you make it a little simple and if there are any thing in the formula which has its own formula which i have to answer so write that down as well the formula of it and write fown the formula of the question.

2007-10-01 12:23:04 · 3 answers · asked by Hamza 1

This is a question for the ppl who are electric engineer, what is it like to be an electric engineer (is it boring is it fun..etc)
and how much money you make being an electric engineer(USA). also what math classes would you recommend taking in college

2007-10-01 11:33:41 · 4 answers · asked by bigboykerb4life 1

2007-10-01 11:04:19 · 1 answers · asked by Buck BUCK 2

2007-10-01 10:58:30 · 2 answers · asked by jimmy 1

i need help with this physics problem. i hav no idea how to solve it. please help me. thank you in advance.

A can of paint (volume = 3.78 10-3 m3) covers an area of 25.0 m2. What is the thickness of the paint on the wall?

2007-10-01 09:40:59 · 4 answers · asked by Quang P 2

2007-10-01 08:54:46 · 10 answers · asked by Arun K 1

I have progress energy here in Raleigh, NC and they charge $0.10 per kilowatt which is outrageous. They are also a monopoly. I no option to switch electric companies. The home is 2300 square feet and is all electric. No gas appliances. Would it be possible to switch to a generator and just buy gas when needed? If so, how long would it be before I notice the savings?

2007-10-01 08:40:51 · 11 answers · asked by Anonymous

2007-10-01 08:19:07 · 2 answers · asked by tauras t 2

How many resistors of resistance 7Ohms each are required to make a resistor of 1ohms. How must they be connected?

thanks, i need help with this

2007-10-01 08:17:45 · 3 answers · asked by Anonymous

The symbol appears after a Feature Control Frame and is a circle with a vertical line going through the center and it is black on one side and white on the other. Looks exactly like the "contrast" button on a monitor. It doesn't really affect me at the moment, but now my curiousity is piqued. Anyone know what this symbol represents?

2007-10-01 08:05:12 · 2 answers · asked by Brad B 1

I'm looking for a "linear thermocouple" or a thermocouple that is relatively linear over a range of 70-220 degrees Farenheit. By relatively linear, I mean that I could allow an error under 2 degrees farenheit in that range. Anybody know anything about this, or where to find good charts? I'm trying to make this inexpensive.

2007-10-01 08:00:03 · 3 answers · asked by Tim F 2

how do i make a river it needs to be a circle and make it flow with a paddle that will spin and create electricity

2007-10-01 07:36:33 · 2 answers · asked by lawmaster_bruce 2