Re: CONSERVATION OF ENERGY

[bennett@Oakland.edu (Clarence Bennett)]

 A heavy cylinder is 
> > filled with a mixture of gasoline and air sealed and insulated.  In 
> > the 
> > side is a spark plug to which we can apply a spark whose energy 
> > contribution may be considered negligible.  The temperature goes up 
> > when 
> > the plug sparks; the pressure increases; but no heat is transfered, 

Not even from the vapors to the container?


> > No work is done, 

Might not the cylinder wall be stretched?

and there is no change in internal energy.  In order to 
> > understand how this can be we have to include all of the energy in the 
> >
> > internal energy.
> >
> >
> >
> > W. Barlow Newbolt    

Clarence
Oakland University
Rochester, Michigan
http://www3.acs.oakland.edu/physics/staff_info/Bennett.htm