During a single period, the distance traveled by a wave is
A) one-half wavelength.
B) one wavelength.
C) two wavelengths.
D) more information is needed
Answer: B
Physics & Space Science
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An astronomer would find a type Ia supernova in a distant galaxy useful as a(n) ____
a. spiral tracer b. gravitational lens c. age calibration d. rotation curve e. standard candle
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Indicate whether the statement is true or false
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What is the intensity of a 70-dB sound? The threshold of human hearing is 1.0 × 10-12 W/m2
A) 10-4 W/m2 B) 10-5 W/m2 C) 10-6 W/m2 D) 10-7 W/m2
Physics & Space Science