HOMEWORK HELP Thread

[descendency]

Originally Posted by Shahin

Yo,

I have an essay to write, What are the Pros and Cons of Living in Ancient Egypt and Mesopotamia. WTF kind of subject is that? I can think of plenty of cons, but pros? Damn.


You can see the stars better at night? ****

Con: It's not the US.

Pro: It's not the US.

[TheBuffaloBills]

Originally Posted by Bosanac01

How bout something about economy? I might have a lot off that on my old computer.

Yeah man, that'd be awesome

[Bosanac01]

Originally Posted by TheBuffaloBills

Yeah man, that'd be awesome

Alright man, I'll have to go find my old lap top, and it takes a while for it to boot up. just pm me your email address and I'll send an essay to you, how long do you want it?

edit: Will take about 20 mins.

[Nalej]

Anyone know anything about Mechanical Vibrations?
I'm only a couple weeks into the class so my questions are on the initial concepts

Equations of Motions... I get the concepts of getting the "equivalent" masses and K's but...
I just suck at starting the problems... still n00bing it up and it's annoying

[TitansCJftw]

I remember 10 years ago

[b316]

Originally Posted by Nalej

Anyone know anything about Mechanical Vibrations?
I'm only a couple weeks into the class so my questions are on the initial concepts

Equations of Motions... I get the concepts of getting the "equivalent" masses and K's but...
I just suck at starting the problems... still n00bing it up and it's annoying

Damn you are brave for taking Vibrations. I took Advance Thermo. DraftGuru might be able to help you.

Cramster.com?

[Wootylicous]

I have vibrations next semester ugh

[Nalej]

Originally Posted by bhaarat316

Damn you are brave for taking Vibrations. I took Advance Thermo. DraftGuru might be able to help you.

Cramster.com?

They have an ME section but none of their textbooks (for HW help) are Vibrations. I searched a bit around but couldn't find anything.

I won't be taking advanced thermo but I'm taking Heat Xsfer and I'll probably go with Compressible Fluid Flow.
Fluid Flow wasn't too bad and it kept my attention. So we'll see.

[b316]

I'm going to be taking Heat Transfers as well. No compressible fluid flow, i hear its crazy. Fluid mechanics/flow, was pretty interesting, but then they like kick it up a few to many knotches since you have to work with a system of flow on something, like air hitting turbine blades and how they are shaped and what not, matrix lots of them.

I took random electives, like intro to bioengineering, photovolotic systems, advance thermo, HVAC(super easy class and very to the point of look up in table, find right equations combine). Still not sure what I want to do, might end up going for MBA in project management.

[Nalej]

Anyone know how to use the atan2 function in matlab?

In my mech vibration class, I figured out some angel using atan but apparently the correct angle is 180 degrees opposite on the unit circle.
My instructor told us to use the atan2 function but it's asking for a Y and X and some examples show inserting a range as well.
That's just too much for me to comprehend.... any help?

[b316]

You would be better off going to matlab or physics or engineering forum. Though sometimes they are rudy cool, and won't help unless you show them you did something or if it is hw this only drop hints. other times you get people that will help.

[Brothgar]

you try this thread?

http://www.mathworks.com/matlabcentr..._thread/151925

[Nalej]

Thanks fellas.

Broth, that link just went over my head. Cross and dot products of several vectors getting arctan'd ... I get all that buy my example is a simple equation.
It's not a vector or anything. I think that's why I'm so confused.
I can't find any examples that pertain to my situation.

All is well though. A friend of mine let me know how to make it work.
Not sure if it's the right way to do it but it's the only way I got it to work.

Thanks again.

[zachsaints52]

After you guys talking about bioengineering and all, anything normal seems useless to post in this.

[Wootylicous]

Anyone good in microeconomics ?! I'm stuck at some basic problems but for some reasons I can't find the right goddamn answer.

[Razor]

Originally Posted by Wooty Magic!

Anyone good in microeconomics ?! I'm stuck at some basic problems but for some reasons I can't find the right goddamn answer.

Maybe I can help you. I'm mostly into macroeconomics and finance, but I do have some knowledge of microeconomics as well.

[Wootylicous]

Check your inbox!

[Razor]

Originally Posted by Wooty Magic!

Check your inbox!

Jebus! I haven't seen anything like this for 4 years now. I'll have to check my notes or something, but I'll get back to you.

[Wootylicous]

Originally Posted by Razor

Jebus! I haven't seen anything like this for 4 years now. I'll have to check my notes or something, but I'll get back to you.

Thank you! Worst problem ever.

[Razor]

Originally Posted by Wooty Magic!

Thank you! Worst problem ever.

Check your inbox! :)

[jrdrylie]

Originally Posted by Wooty Magic!

Thank you! Worst problem ever.

I majored in Economics so I may be able to help.

[b316]

Wooty I'm need your help again I will draw it up, once i get home, fudge the train

[Wootylicous]

I'll look at it!

[b316]

finally got around to it, my bad.



B=2*m*gamma*Wn
my''+by'+ky=bz'+kz

Get the transfer function H(s)=Y(Bar)/Z(bar)

[Wootylicous]

Let me take a look at it I will try to come back with something !