We'll chat it up on vent.
(Finally, we can talk about something I actually know a little about!! I'm so happy!!
![Smile :)](./images/smilies/smile.gif)
I'm guessin here but I'd think that the force a magnet would feel would weaken by the square of the distance between the two magnets, much like how gravity acts.Gunn wrote:Basically my questions concern mainly magnets and loss of magnetism. The next question would be strength and distance of strength of the magnets. Also I want to know the lifespan of magnets if they are in constant contact with other magnets.
See Junn's post for friction. Although I'd like to add that friction increases as a non-linear function when you get to very high speeds... But for everyday life, the linear equation will do.Gunn wrote: Other questions as far as physics are concerned are how does friction actually calculate into loss of momentum and how is the conversion of movement put to power such as in the way windmills create power.
The relation between force, power and energy is as follows. Force is what is being applied to an object. It could be gravity, friction, magnetic or a zillion other things.gunn wrote: As far as power production I want to know how much force it takes to create energy and also basically a table that shows force to power output. I will stop with that I have a lot more questions but that will do for now.
They get the power from a nuclaer reactor. You can then use the current produced to make and focus a magnetic field to propell small particals at very high speed (ions)...Junniper wrote: Space? They're working on an ion thruster that produces a small amount of thrust at a very low energy conversion rate that I think uses electricity, but what the electricity comes from I don't know.
This is because most magnets are in an equilibrium phase and banging them or changing the field induces enough energy to alow them to go through a type 1 phase transition. Similarly you can demagnitize pretty much anything by heating it enough (most magnetic materials have a critical temp), in fact most magnets are made by cooling a material in the presence of a strong magnetic field.Preest wrote:Also, most magnets can loose their magnetism by banging them, or subjecting them to an alternating magnetic field. However some magnets are so strong, that they continually re-enforce their own magnetism.