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3 votes
652-05-01-01-00_files/i0190000.jpg What does the direction of arrow B indicate?

2 Answers

3 votes

Answer:

Just letting you know Michellealayon is right :)

Step-by-step explanation:

Have a nice dayy~ ^^

User MatFiz
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6 votes
The direction in which the wave is moving. 
User Pedro Werneck
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