In this figure the shape of a plucked guitar string (a) is the superposition of the first five harmonics (b-f). What does the listener hear when a guitar string is plucked?
a. The first harmonic because it has the greatest amplitude.
b. The fifth harmonic because our ears are most sensitive to high frequencies.
c. A blend of all of the harmonics shown in the figure because all of them produce sound.
c
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Increasing the damping constant beyond that required for critical damping makes the system approach equilibrium more quickly
Indicate whether the statement is true or false
A 120 V-rms voltage is applied across a 6.0-?F capacitor and a 100-? resistor. If the frequency of the generator is 60 Hz, what is the rms value of the current in the circuit?
A) 0.26 A B) 0.36 A C) 0.46 A D) 0.56 A E) 0.76 A
The positron was first predicted by
A) Einstein. B) Planck. C) Elvis Presley. D) Dirac. E) Heisenberg.
Based on its surface features, the most important event on Venus in the past billion years or so was
A) a global "repaving" that erased essentially all the surface features that had existed earlier. B) the eruption of a giant volcano that formed one of Venus's "continents." C) the impact of an unusually large asteroid that left a deep scar on one side of the planet. D) the onset of mantle convection, which caused Venus's lithosphere to split into plates like those on Earth.