In the gure, a French submarine and a U5. submarine move toward each other during maneuvers in motionless water in the North Atlantic. The French sub moves at speed VF = 52.00 km/h, and the US. sub at vus = 67.00 km/h. The French sub sends out a sonar signal (sound wave in water) at 1.000 X 103 Hz. Sonar waves travel at 5470 km/h. (3) What is the signal's frequency as detected by the U5. sub? (b) What frequency is detected by the French sub in the signal reected back to it by the U5. sub? ""lllllliinnnn'o French ' ' ' ' us. pr V054 (a) Number n 1021.96787889976 Units l N/m vl (b) Number I 10444.472352916983 Units l N/m Vl