physics 109 exam three

standing waves are the result of superposition of two sinusoidal waves of the {same/different} frequency and the {same/different} amplitude, traveling in the {same/different} directions

same; same; different

how should the length be changed if you want to double the frequency?

doubling frequency requires half the length

what will the frequency of an open pipe become if one end of the pipe is cloed?

closing one end cuts frequency in half

complete these major triads: { C - E - __ }, { F - A - __ }, and { G - B - __ }

G; C; D

advantages of the tempered scale

transposition (changing key) does not require tuning

disadvantages of the tempered scale

some intervals have no harmony

advantages of the just scale

most intervals are harmonious

disadvantages of the just scale

transposition is difficult or impossible without retuning

what does fourier’s theory tell us about representing complicated waveforms in terms of sine waves?

fourier tells us that we can represent a complex waveform as a sum of sine waves whose frequencies are multiples of the fundamental f, 2f, 3f, 4f…