In the Beats lab, you are observing the beat pattern formed by combining the oscillations from the two circuits on the oscilloscope. On one circuit, you turn the capacitor screw clockwise and notice that the beat period increases. As you continue to turn the screw clockwise you eventually observe the beats spread so wide they are no longer there and all you see is a single frequency oscillation. What has happened

i think they are all correct

explanation:

they seem good

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.