Asource emits a sound and is represented by the red dot in this map. four people are located around the source, and the circles represent the sound wave.

as the source moves west, which person hears the highest pitch?

-person a

-person b (not correct)

-person c

-person d

This is what i found on google “according to the collision theory, the following criteria must be met in order for a chemical reaction to occur: molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. molecules must collide with the proper orientation.” i hope this information you.

English can you write this in english do we can you