Solution Found!
Answer: In the stands of a racetrack, you notice smoke
Chapter 20, Problem 11E(choose chapter or problem)
QUESTION:
Problem 11E
In the stands of a racetrack, you notice smoke from the starters gun before you hear it fire. Explain.
Questions & Answers
QUESTION:
Problem 11E
In the stands of a racetrack, you notice smoke from the starters gun before you hear it fire. Explain.
ANSWER:
Solution 11E
Step 1:
The speed of light and sound are different. Speed of light, c = 3 × 108 m/s
Speed of sound in air, v = 340 m/s
The sound of the gun and the smoke are originating at the same time. Since it is travelling at different speeds, there will be a specific time lag between the light and the sound.