Question 9 of 15 What conditions must be met in order for work to be done?
Check all that apply.
O A. At least part of the applied force must be in the same direction as
the movement of the object.
O B. The output force must be greater than the input force.
O C. The work must be greater than the momentum.
O D. The applied force must make the object move.

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.