A stationary insect on the surface of water creates circular waves with its legs, as shown in diagram 1. The insect begins to travel to the right as shown in diagram 2.
Which row describes the change to the waves at X caused by the movement of the insect?
1 )
frequency: decreases / wave speed: increases
2 )
frequency: decreases / wave speed: stays the same
3 )
frequency: increases / wave speed: increases
frequency: increases / wave speed: stays the same
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