Which of these is not a use of wave reflection technology? Ultrasound
Microphone
Radar
Sonar

f=ma a/f/m a= 480/60 a = 8m/s/s that is quick wow

nah.   i'm just sleepy.

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.

graph question answered .. you think better when you are relaxed and happy