Two ships in a heavy fog are blowing their horns, both of which produce sound with a frequ...

Two ships in a heavy fog are blowing their horns, both of which produce sound with a frequency of 175,0 Hz (Fig 14-42). One ship is at rest; the other moves on a straight line that passes throughthe one at rest. If people on the stationary ship hear a beat frequency of 3.5 Hz, what are the two possible speeds and directions of motion of the moving ship?

FIGURE 14-42