# Recent content by Si14

1. ### Software to draw simple models

Hi there, I am wondering if you have any suggestions how to draw these simple engineering models? Thank you in advance.
2. ### Maximum theoretical power from piezoelectric harvesting

Suppose you have a predefined volume of piezoelectric (10cm^3). What is the maximum harvested power using piezoelectric?
3. ### Analysis Reference book for "Fredholm integral equations"

Hi, I am looking for a good reference book for "Fredholm integral equations". + a book with lots of examples related to this topic! Thanks for your help.
4. ### Tunneling in a non-subatomic particles

Hi, We now electrons do tunnel and for example FE happens because of this. However, is it true to scale up this effect for non-subatomic particles? For example, is it OK to say, if you are behind a wall and hit yourself to the wall, there is a chance that you might Tunnel and see yourself on...
5. ### Multimeter current level when measuring resistance

Thanks. Since, I do not have access to the device anymore, and I could not find the current level on their website, I am wondering if anyone is familiar with this question or has any idea about it? Thanks you for your help.
6. ### Multimeter current level when measuring resistance

Hi, When using a multimeter to measure resistance, what is the used current level of the multimeter? I am using Fluke 77 IV Series Digital Multimeter. Thanks.
7. ### INTEGRAL{ e^cos(x) dx }

I checked wolframalpha. However, it gives a series expansion which I can not use. I wonder if the integration by parts suggested by sharks is doable?
8. ### INTEGRAL{ e^cos(x) dx }

I wonder if it is possible to solve the indefinite integral? I assume the answer to the definite one should be close to the answer I get with numerical methods.
9. ### INTEGRAL{ e^cos(x) dx }

sharks, it seems that it gets more complicated! I stuck immediately after substitution.
10. ### INTEGRAL{ e^cos(x) dx }

Homework Statement I want to solve this integral without using series expansion. The answer should be in a closed form. I wonder if this is possible? Homework Equations The Attempt at a Solution I used numerical methods and was able to solve it numerically for a given...
11. ### Waves produce oxygen?

Thanks. I was curious about the role of waves in the % of oxygen present in the water. Specifically, between moving waters and still waters. So, suppose waves do not exist in oceans. Does it affect the livings under water? (you said wave mix oxygen with water and increase the %).
12. ### Waves produce oxygen?

Hi, Does wave hit the shore produce oxygen? If so, how and how significant is this amount of oxygen? Thanks!
13. ### Effect of dissociation energy on plasma ions behavior

Thanks. Ok, I also know that the 1st ionization energy of nitrogen is higher than oxygen. http://environmentalchemistry.com/yogi/periodic/1stionization.html So knowing this, can I argue what I said in my 1st post that since the ionization energy is higher for nitrogen, compared to oxygen, can...
14. ### Effect of dissociation energy on plasma ions behavior

Hi, Suppose there are two plasma cases, conditions are the same, except for the gases present: a-Oxygen b-Nitrogen Since the dissociation energy of nitrogen is higher than oxygen, what could be concluded from it? Could it be more energetic nitrogen ions than oxygen ions (because initially...
15. ### Does melting deteriorate the crystalline order?

I wonder if melting deteriorate the crystalline properties and order of a solid? For example, one should expect to get 2 different Raman spectra from the solid and melted samples?