I just got home and thought I may be able to add some things that may have gotten left out.
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.
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.
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.
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.
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: 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.
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.
Energy is the amount of potential an object has to do work. Just lifting a book off the table will give that book an amount of energy, or potential to do work.
And now power. Power is the rate at whitch work (work = change in energy) is being done.
Now given the above, even if you exert a force on an object but the energy or potential of that object has not changed, then no work is done.
An example of this is if I walk up and push a wall. If the wall does not move, I have done no work, no matter how hard I push.
I just got home and thought I may be able to add some things that may have gotten left out.
[quote="Gunn"]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.
[/quote]
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.
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.
[quote="Gunn"]
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.
[/quote]
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.
[quote="gunn"] 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.[/quote]
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.
Energy is the amount of potential an object has to do work. Just lifting a book off the table will give that book an amount of energy, or potential to do work.
And now power. Power is the rate at whitch work (work = change in energy) is being done.
Now given the above, even if you exert a force on an object but the energy or potential of that object has not changed, then no work is done.
An example of this is if I walk up and push a wall. If the wall does not move, I have done no work, no matter how hard I push.