It takes 40 j to push a large box 4 m across a floor.
assuming the push is in the same direction as the move, what is the magnitude of the force on the box?

a) 40 nb) 4 nc) 160 nd) 10 ne) none of the above

Atemperature inversion can cause a warm air mass to move over a colder air mass. this traps the colder air mass and prevents surface air from rising. this may result in which of these? a) smog b) acid rain c) freezing rain d) a thunderstorm