C. Find the period for one complete revolution. Given:
V =
R =
Unknown:
T = ?
Equation:
v = 2*pi*r/T
OR
T = 2*pi*r/v

ifhf

Explanation:

d i think ao i probably am wrong

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.