Gauss’s Law
An electric field was drawn around two positive charges and
one negative charge. After making three
different surfaces the net flux was found by subtracting the amount of lines
entering the surface by the amount of lines leaving the space. It can be seen that the net flux is proportional
to the charge enclosed within the surface.
Microwave Demos
What happens when you put different objects in the
microwave?
Fork
-Nothing! The particles on the fork are much too big for the
microwaves to have an effect on it and it also has a larger thermal mass
meaning it takes longer for it to heat.
CD
The surface bubbled and this is because the particles on the
CD are much smaller than the ones on the fork so the microwaves had a drastic
effect on the CD
Lit Match
A plasma ball forms! (see whiteboard for explanation)
Christmas Tree Ornament
It was found that depending on the orientation of the
ornament in the microwave the ornament would either spark or nothing would
happen (see whiteboard for explanation)
Steel Wool
A large cloud of sparks formed (see whiteboard for
explanation)
Soap
Expands like a soap soufflé (see whiteboard for explanation)
Light Bulb
Sparked colors and then went up in flames (see whiteboard
for explanation)
Capri Sun Container
Expanded and sparked (see whiteboard for explanation)
Grape
Nothing happens to a whole grape but a grape cut in half
will spark and catch fire
Gauss’s Law ActivPhysics
Answers to ActivPhysics on Whiteboard
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