Today we talked about beats, sonic booms, and the Doppler shift.
If you have mass, you can't travel the speed of light!
How do they teach physics in the south? (said after a failed demonstration due to humidity.)
1) Charging by 'contact'
glass (+) + silk(-)
plastic(-) + fur(+)
We also talked about electrons!
Coulomb
unit vector denoted by "hat"
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