A train pulls the boxcars. What are the vertical forces present? (1 point) O weight, push of tracks against wheels
O pull of air on boxcars, push of tracks against wheels
O weight, pull of air on boxcars
O weight, friction

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.

grav potential energy

amplitude

hope this