A student is standing 600 m from a firework display - Edexcel - GCSE Physics Combined Science - Question 2 - 2016 - Paper 1
Question 2
A student is standing 600 m from a firework display.
A firework explodes with a loud bang, and a flash of light is seen.
Describe how a student can measure the tim... show full transcript
Worked Solution & Example Answer:A student is standing 600 m from a firework display - Edexcel - GCSE Physics Combined Science - Question 2 - 2016 - Paper 1
Step 1
Describe how a student can measure the time it takes for the sound wave from the loud bang to travel 600 m.
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Answer
To measure the time it takes for the sound wave to travel 600 m, the student should:
Use a stopwatch to measure the time accurately.
Start timing when the flash of light is seen from the firework explosion.
Stop the timing when the loud bang is heard.
By recording the elapsed time using this method, the student can determine how long it takes for the sound to reach him.
Step 2
What is the amplitude of this wave?
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Answer
The amplitude of the wave shown in Figure 2 is 2.8 cm.