# Search results for query: *

1. ### How to turn Fe2O3 into FeO

Hello, For my research I believe I need FeO for one of my compounds, but we only have Fe2O3 powder. Is there anyway i can convert this to FeO without using many other chemicals? I do have access to a furnace that can get up to around 1300-1400 C. Thanks
2. ### Speed of Hydrogen combustion out of a tube?

This is not for school, just my own curiosity.
3. ### Speed of Hydrogen combustion out of a tube?

Hello, I was curious about how to calculate how fast the escape velocity of hydrogen out of a tube/cylinder would be. Once end of the cylinder is closed, the other is open, obviously. Assume the cylinder is full of hydrogen at 1 atm. My thought is that you could use PV=NRT to calculate the...
4. ### I Why can U be expanded in terms of T and V?

dU/dT(V)+dU/dV(T) is the differential of U with the coordinated (T,V)
5. ### I Is there anti-Information?

Is there any theory that says anti-information exists? If there is anti-matter, would that matter carry information to annihilate the regular matter's information saying its a certain type of matter and turn it into energy? Could anti-matter just be regular matter with anti-information.
6. ### Model Rocketry Licensing

Thanks for the help!
7. ### Model Rocketry Licensing

Interesting. This wouldn't be a rocket just a rocket engine tested in a laboratory. for thrust measurements. No horizontal launch is being done as long as you mean launch as letting it move. I'm not with the NAR i just called them because i figured they would know. Is it difficult to get...
8. ### Model Rocketry Licensing

Well i was hoping someone would be in NAR, but the president of NAR already answered my question.
9. ### Model Rocketry Licensing

If your rocket is of a certain power range you need a certain license. My question is of you need these license's if you are only doing horizontal thrusts tests and never actually launching it vertically into the air?
10. ### Highest possible AC frequency possible today?

Ao I'm assuming they are in the tera hertz today?
11. ### Highest possible AC frequency possible today?

So 2.8mm is more than 2mm? i are you saying the frequency would be zoo fast it would act as a DC current since it isn't an "Oscillator"
12. ### Highest possible AC frequency possible today?

I'm a newbie with electrical engineering, i don't see why a wavelength would cause a problem with a wire. Can you go further into detail?
13. ### Highest possible AC frequency possible today?

What is the highest possible AC frequency being able to be generated. I don't care if this is usable in a circuit but as long as it can be physically made, what is the highest AC frequency possible? I've heard 70GHz was the max using an amplifier.
14. ### Aluminum structure modifications for use near a very hot fire

The new version I'm building consists of this: "The second version will have a ventilation system built into it because we have a dead spot in our yard so like no air gets to the bottom of the flame. There will be modified garden solar light panels to power a light system that interacts with a...
15. ### Aluminum structure modifications for use near a very hot fire

I understand. it is for the frame of an outdoor fire pit.
16. ### Aluminum structure modifications for use near a very hot fire

Honestly i don't see how that information is relevant. The question was specific and you're choosing to deviate from answering it.
17. ### Aluminum structure modifications for use near a very hot fire

In case somebody wanted to stand on it. picture a cube made of bars and then a cube of similar height but just a but smaller that fits on the inside and then they are connected.
18. ### Aluminum structure modifications for use near a very hot fire

I'm casting multiple bars as a frame, they are of course solid and square in shape. Please explain what Creep onset is?
19. ### Aluminum structure modifications for use near a very hot fire

Well I'm doing homemade foundry so that's why aluminum, its a price issue. Aluminum is just coming from beer cans or pop cans.
20. ### Aluminum structure modifications for use near a very hot fire

I'm building an frame out of solid 5/8 inch thick aluminum square bars. this frame will be around a fire temps close to melting points but there will be insulation in make sure it won't melt. I was thinking about drilling holes in the free space of the aluminum to reduce it's weight and if you...
21. ### What happens when Bose-Einstein Condensate exits a vacuum?

But density is different than volume. Are you saying that the BEC density is larger than a liquid Hydrogen density? Thus, wouldn't that mean that the volume would have to decrease. Unless you account for a decrease in mass from the decrease in energy through the change in thermal energy?
22. ### What happens when you remove an excessive amount of electrons.

I am a Physics and MechE major. My questions are purely theoretical to I try and think of new ways to do new things or more efficient ways to do old things. While my idea may not seem relevant to the population, there is still a hidden purpose, within, which I'm not yet willing to reveal. And so...
23. ### What happens when you remove an excessive amount of electrons.

While he didn't mention it, i also didn't reply to him asking if he knew about the phenomenon. So it could be possible that he knew about it but just didn't mention the name of it.
24. ### What happens when Bose-Einstein Condensate exits a vacuum?

So essentially you're saying the volume of 1,000 liquid hydrogen atoms is the same as 1,000 BEC hydrogen atoms?
25. ### What happens when you remove an excessive amount of electrons.

Could you please elaborate on this? I asked brother (Chemistry Major (almost, if not 4.0 GPA) in my fraternity) and he said that it could happen (didn't mention Coulomb Explosion) but that the oxygen may not be recoverable since it would undergo (possibly) nuclear decay.
26. ### What happens when Bose-Einstein Condensate exits a vacuum?

The point of the question was for a hydrogen BEC. Like i said we haven't learned specifically about BEC's yet in lecture but i assumed volume reduced since temperature reduced. 1) I was under the assumption that multiple hydrogen molecules could take the state of one hydrogen molecule since...
27. ### What happens when Bose-Einstein Condensate exits a vacuum?

Well, i realize that it would no longer be a BE condensate, that's the point. The question was more so pertaining to, if there would be a rather instantaneous expansion in volume due to the extreme pressure and temperature differences. As gas cools, the volume reduces to a liquid and further to...
28. ### What happens when Bose-Einstein Condensate exits a vacuum?

I haven't learned about this yet in school but I'm assuming as the atoms condense down to a single wavelength the volume of the liquid would be very small. If this condensate was instantly released out of a vacuum and into normal atmospheric pressure, would the volume rapidly expand? Secondly...
29. ### What happens when you remove an excessive amount of electrons.

Lets take a simple water molecule for example. You can use the photoelectric effect to remove electrons from a molecule. As a thought experiment, let's say you have a contained single water molecule in a vacuum with no impurities. Perfect Vacuum. If you use the Photoelectric effect and beam...

A lot of people have been arguing that TSLA's stock/the company in general won't take off because the demand is above the battery technology at this time. I'm a junior in college studying physics but will probably either switch to finance and do stocks because i like it more or i was double...
31. ### Schools College of Arts and Science

Because I'm with the Arts, i need a language requirement which is 4 extra classes i have to take. 4 classes about spanish which i don't care about and also requires a good amount of time studying for because of all the memorization involved.
32. ### Schools College of Arts and Science

Because i got energy to spare! :)
33. ### Schools College of Arts and Science

College of "Arts and Science" Am I the only person who absolutely hates that the sciences/math (I don't consider philosophy as a science) is in the same department as the arts/religions? I think Physics, Chemistry, Math, and other majors that stem from those like bio-chem, astronomy etc should...
34. ### How did you study for quals?

You just completely missed the point. good job. if you know how the equations are derived you can better understand what the equation means physically and can apply it better.
35. ### Are emergent properties real?

I read A Different Universe by Bob Laughlin. Worst book ever. Terrible writer. 95% stories 5% science. I don't even know what he was talking about half the time because there's so many small stories every chapter. just saying. And the book was if favor of emergence.
36. ### How did you study for quals?

Im an undergrad but what i do know about physics/tests is that if you know how to derive the equations, you can solve most basic/intermediate problems as long as your calculus knowledge is good.
37. ### Taking Physics 2 before Physics 1?

At most schools Calc 1 is the only prerequisite for Physics as far as math goes, or you need to be taking it at the same time as physics 1. All you need to know for Physics 1 (Newtonian mechanics) is basic derivatives for velocity and acceleration as well as some integrals for force, work and...
38. ### What classes/fields did you do the worst in?

I have to take those classes later on. What exactly do you do in those classes?
39. ### What is a Photon?

A photon is a packet of Electromagnetic Energy. Quantized light energy. A photon doesn't have mass but it has energy which is why it has momentum. E=pc. It travels at the speed of light because it IS light. Photons are the particle aspect of light. Light does have a measurable wavelength...
40. ### What classes/fields did you do the worst in?

The only reason i pull all nighters is because i typically work wed-fri or satuday at night from 5pm-11 or midnight. So i only have monday, tuesdays's during the week to study in the daytime.
41. ### What classes/fields did you do the worst in?

I personally know that calculus isn't my thing, i do terrible in my calc 3 class even though i probably spend more time studying than anyone else. I've done multiple all nighters studying (had to because of my work schedule), and i'll go into the class thinking I'm going to get an A, then after...
42. ### Matrices and Physics.

I do plan on taking the next higher level math course which is called Theory of Linear Transformations. The other higher level math courses that have my class (Applied Linear Algebra(Matrix Theory)) as a pre-requisite are classes dealing with linear or non-linear optimization, Topology...
43. ### Matrices and Physics.

I think by proofy he means a class focused on theorems and learning why something is or isn't valid rather than pure application. My class is definitely proofy because we need to use the theorems to explain why something is or isn't always consistent etc.
44. ### Matrices and Physics.

We have learned the basic matrix operations, determinants, inverse matrices, transformations, Vector spaces, subspace, null space, column space, range, kernel etc. We are now doing Bases.
45. ### Matrices and Physics.

I'm learning about Matrix Theory/Linear Algebra and I find this to be pretty interesting in comparison to any other math (calc) I've learned so far. Do matrices get used much in physics?
46. ### How much math do i need?

Yes, Matrix Theory is Linear Algebra. There is also another Linear algebra class past my matrix theory class but it is pretty high up i believe.
47. ### How much math do i need?

I haven't decided which area i want to go into however Space Propulsion has been attractive to me for a while. But i also don't want to just do purely theoretical work, i want to do hands on work and build the devices were testing.
48. ### How much math do i need?

I'm a physics major in calc 3 and matrix theory and I'm finding math harder to learn than physics. My major requires calc 1-3, and differential equation. Matrix theory isn't hard but i do find that i need to spend much more time on math to be able to learn it than with physics where it comes to...