I want to finish my post by very thanking Prof. Jim Al Khalili series about Physics Science at BBC, they were really helpful to me. I wouldn't forget series like "Order and Disorder", "Story of Electricity", and "The Secret Life of Chaos". Here some links:
Order and Disorder 1/1:
Order and...
This problem definitely requires computational analysis. It's the very fact that matter is composed of atomic particles (hard particles) and their distribution it's what makes net forces in space. Without finite element method we actually couldn't make aproximations to engineering problems that...
Hmmmm well, you want an answer to this right?
Please read Newtonian physics before throwing some argument. But more deeply, take a look about what is INERTIA, and what is ACCELERATION, and COLLISIONS. You can see experiments from NASA astronauts in the space, they are very helpful in giving...
I have to quote myself because I want to focus in my last paragraph.
I really don't know what's going on at the nano scale. I'm not nuclear physicist or alike. My common sense tells me that there should be a temperature difference between two isolated bodies in order to emerge radiation. But...
The problem is that using technology like hydro or wind could affect global climate and life on this planet. Put simply... using hydroelectricity makes water flow slow, and so is with wind. That could lead to a disequilibrium of the complex system here in this planet.
Well, this post is also...
I think is all about advances in science that this kind of things had been overlooked. It's about the "solve the problem" agenda over scientists too. Probably money is involved too?
Energy could appear from far faaaar away and we wouldn't know nothing about it's origin. If NASA technology is...
Hi to all, in my opinion,
the better way to capture radiative energy or heat (infrared radiation) and convert it to ordered energy such as electrical energy, could be a novel device that NASA researchers built near 2010. It's composed of 'nanoantennas' arrays, and they could convert radiation...
Hi to all.
I'm looking for ways heat could be converted directly to electrical energy. I figured out some machinery out there that can convert heat to electricity by difference between temperatures, but this method seems to be inefficient. I just came with an initial idea of how a new machine...
It seems to me that jmmy is looking for a method to calculate the excerted force on the small magnet at a certain length from the big magnet. So he can use integrals or derivatives to obtain velocity and acceleration functions.
... And then he can also calculate 'work' done if he really need...
No I didn't. And I put below what K^2 wrote, again.
What?. He screwed up with his ability to relate an increase in kinetic energy to work done. He assumed that an object only do work when loosing velocity, like when an object is subjected to friction in a surface.
Thanks for your...
That in bold is incorrect. If you are going to accelerate an object, for example, in horizontal direction, even in a frictionless surface, you have to apply a force along all the trajectory. If you stop acting on the object with force, then the kinetic energy will be the same and the object will...
Ok, I understand very well your point, but I was referring the situation of a 'thermodynamic cycle', where we have conservation of energy like iput works, and output works, and the sum of them is equal to zero. It doesn't matter where we define the start point in the trajectory of the object, I...
You are just doing what physicist like to do when they screwed up with something... talking and talking qualitatively but avoid equations they used to teach. We know that when an object of mass m falls, it presents a change in kinetic energy, and it is accounted like a work done. We know that...
I have a thought experiment for physicists and thermodynamicists and the like. Those who are always looking for 2+2=4 but for some reason avoid discussing certain issues that are very clear.
Simply put the picture where we have an object of mass m in the ground. The physics math show that we...