A sound wave travels across a 2,100-meter wide valley in 7.0 seconds. The speed of the wave is . 300 m/s
147 m/s
1.47 m/s
impossible to determine without knowing the air temperature

what question you dont ask a question

explanation:

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.

there are no atoms