According to the doppler effect, which statement is true about a sound as it approaches you and then moves away.

a) as the source approaches you, the sound waves are compressed so the pitch of the noise increases.
b) the pitch of the sound remains the same the entire time, regardless of the direction of the source.
c) as the source moves away from you the sound waves are compressed so the pitch of the noise increases.
d) as the source approaches you, the sound waves are stretched relative to the individual so the pitch of the noise decreases.

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.