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Pls answer fast pls fast
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3 votes
Pls answer fast pls fast

Pls answer fast pls fast-example-1
User Peyton Crow
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1 Answer

3 votes

Answer: D

Step-by-step explanation:

The time it takes for the wave to travel 25 cm is 1/1000 s as T = 1/f

So to travel 2.2 km or 220000 cm, it takes 220000/25 x 1/1000 = 8.8 s or 8 4/5 s

User Shendor
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