Experiment of December 3, 2020:

The time to submit an answer is over. You can now view the solution of the experiment.

Solution video:



At what distance are the marks on the cable now?

A) 3 cm

B) 5,5 cm

C) 11 cm

D) 16 cm

Advice of the day:

Please make sure that you slowly but completely pull one end of the earpiece out of the toilet paper tube. If there are several minima in the volume of the sound, please mark them all and then measure the distance between them. By the way, the app is called "PhyPhox".