Astring is strung horizontally with a fixed tension. a wave of frequency 90 hz is sent along the string, and it has a wave speed of 55.1 m/s. then a second wave, one of frequency 180 hz, is sent along the string. what is the wave speed of the second wave?

wave speed of the second wave 55.1 m/s

Explanation:

The wave speed of the second wave will going to be same i.e 55.1 m/s. As speed of wave is dependent on the medium and here in this case medium is remain same for second wave also i.e string only, no change in the medium noticed, therefore speed of second wave still remain same i.e 55.1 m/s.

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i think the answer would be reserve.