Practice Quiz

AP Physics B Practice Exam

Category - Introductory Physics

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Which of the following statements best explains why lightning is seen before thunder is heard?
  1. Electromagnetic waves travel faster than mechanical waves in air.
  2. Electromagnetic waves have a higher frequency than mechanical waves.
  3. Electromagnetic waves experience less interference than mechanical
    waves.
  4. Electromagnetic waves form faster than mechanical waves during a thunderstorm.
Explanation
Answer: A - Electromagnetic waves travel faster than mechanical waves in air.
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