Chapter 17, Problem 59P

GO In Fig. 17-42, a French 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 v_F = 50.00 km/h, and the U.S. sub at v_us = 70.00 km/h. The French sub sends out a sonar signal (sound wave in water) at 1.000 × 10³ Hz. Sonar waves travel at 5470 km/h. (a) What is the signals frequency as detected by the U.S. sub? (b) What frequency is detected by the French sub in the signal reflected back to it by the U.S. sub?

Figure 17-42 Problem 59.