Afrench submarine and a u. s. submarine move toward each other during maneuvers in motionless water in the north atlantic. the french sub moves at speed vf-50.0 km/h, and the us. sub at vu,-70.0 km/h. the french sub sends out a sonar signal (sound wave in water) at 1000 hz. sonar waves travel at 5470 km/h. (a) what is the signal's frequency as detected by the u. s. sub? (b) what fre- quency is detected by the french sub in the signal reflected back to it by the u. s. sub? frenche u. s vus fig. 16-22 problem 32.

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.