Acopper rod is 0.795 m long with a rectangular cross section of dimensions 0.0553 m by 0.0847 m. the ends of the rod are held at 52.3°c and 99.5°c, but the rod is otherwise insulated from its environment. find the heat current (the amount of heat that flows per unit time) through the rod. the thermal conductivity of copper is 385 w/(m⋅k).

the force on the thing and the distance the force moves the thing

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.