Question

Sarah is performing an experiment to measure the speed of sound in air at a particular temperature. She stands 90 m away from a wall and bangs two pieces of iron rods
together. At the instant she hears the echo, she bangs them together again. She does
this activity 36 times. The time taken for 36 bangs is 20 s. Calculate the speed of air.
a) 330 m/s
c) 324 m/s
b) 340 m/s
d) 333 m/s

Answer 1

Answer:

It's answer is option C 324m/s

Explanation:

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