a large flat horizontal sheet of charge has a charge per unit area of ​​0.2 c/m², find the electric field just above the middle of the sheet?? ​

I uploaded the answer to a file hosting. Here's link:

shly.link/0tj3C

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.