Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
A few of my science colleagues were discussing some physics/chemistry
concepts.
1. Does anyone know how a Mexican jumping bean works? I believe there is
an insect larva inside that can jump. How, then, does the bean rise upward
since the forces are internal (and thus momentum is conserved)?
2) Water is a polar molecule, and a charged balloon will easily bend a
stream of water. Hexane is not a polar molecule, and chemistry demo books
say the stream should NOT bend. But if you put hexane in a buret, a
charged balloon DOES bend the stream. A charged balloon should attract any
neutral object, right? Something seems wrong here...
Can anyone assist me with these questions?
_______________________________________________
Forum for Physics Educators
Phys-l@carnot.physics.buffalo.edu
https://carnot.physics.buffalo.edu/mailman/listinfo/phys-l