A source of sound waves is placed at the center of a very large sound-reflecting wall. The source emits 0.500 W of power. Two meters from the source the intensity in W/m2 is
a. 9.95 × 10^?3.
b. 1.99 × 10^?2.
c. 0.313.
d. 0.399.
e. 0.625.
b
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A) spectral type M1, luminosity class V B) spectral type O9, luminosity class I C) spectral type G2, luminosity class V D) spectral type M2, luminosity class I
A 120-V rms voltage is applied across a 6.00-?F capacitor and a 100-? resistor. If the frequency of the generator is 60.0 Hz, what is the impedance of this circuit?
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