The Sound of Physics

Mr. Curtis the physics teacher enjoys telling jokes.

When a student says 'Yeah, but...' Mr. Curtis will often interrupt with 'No yabbits; I killed 'em all.'

When a student says 'Ok, so...' Mr Curtis will often interrupt with 'cheese,' because the student said 'queso,' which is a cheese dip.

When a student says 'I'm an adult' (or something similar) Mr Curtis will sometimes jokingly agree that 'you're a dolt.'

When a student says 'Wait!' Mr Curtis will often respond, 'Weight is mg!'

Hertz (Hz) is the unit for frequency, and it is pronounced the same as 'hurts!'

The period (T) =1/frequency. Speed of a wave (v)= frequency (f) times wavelength (lambda). For the fundamental harmonic of a standing wave on a string or in a tube, 1/2 a wavelength fits in the length of the string / tube. Similarly, for the 3rd harmonic, 3/2 wavelength fits in the length of the string / tube. The period is wavelength / speed. fn=n/(2L)*sqrt(F/mu) also has to do with harmonics and standing waves in tubes (closed vs open).