You blow into a smoothie straw and activate the lowest two harmonics, which have frequencies of...

You blow into a smoothie straw and activate the lowest two harmonics, which have frequencies of 40 ?? and 80 ??. Now, you put your finger over the back of the straw and do it again. The frequencies of these harmonics, compared to before, have changed. How?
1. Both of the lowest two harmonic frequencies have decreased.
2. The lowest has increased and the next has decreased.
3. The lowest has decreased and the next has increased.
4. Both of the lowest two harmonic frequencies have increased.

Expert Solution

genius_generous answered 2 years ago

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