alleryStart learning →Sitting 165 m from a speaker (sound 330 m/s), you hear a concert after a radio listener 3000 km away. Their lead is about
A0.01 s
B0.15 s
C0.35 s
D0.49 s
Answer & Solution
Correct answer: D. 0.49 s
Sound takes 0.5 s; radio waves take 0.01 s, so the radio listener is ahead by 0.49 s.
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