Switch on the oscilloscope and determine the purpose of the adjustment knobs. Make sure you can
change the vertical and horizontal scales;
move the oscillogram up and down;
select the channel and set the trigger level;
take a single measurement or measure continuously;
move the cursors and get information about their positions.
A2
Fix the ruler, leaving the free end. The period of oscillation of the ruler increases with increasing length $L$: $T \propto L^\alpha$. Calculate the value of $\alpha$ from your experimental data.
A3
Call a teacher and get this part of the assignment personally.
