How much is done by lifting a box in 2 seconds with 40 W of power

false

because it does not have the potential to be entirely used up

let that person have a turn to speak : )

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

it's c (engineer's do their work with mechanical stuff not on any living being)