Pls help pt.1 1. Click the following link to open the interactive simulation: phet. colorado. edu/sims/html/waves-intro/latest/wa ves-intro_en. html

2. Select “waves”

3.Over on the right there will be a box titled “Frequency”. Click on the little picture of a speaker at the bottom of the box.

4. Check the “Play tone” and “particles” then move the amplitude slider halfway. (It should look like the picture)