In each of the four scenarios to the right, a large bat lets out a short burst o

Question

In each of the four scenarios to the right, a large bat lets out a short burst of ultrasonic sound, which the smaller bat hears a moment later. If the large bat flies at 3.310 m/s and the small bat flies at 14.20 m/s, rank the frequency that the smaller bat detects in the four scenarios, from highest to lowest. Assume that the speed of sound is 343.0 m/s.

sapling learning Map at In each of the four scenarios to the right, a large bat lets out a short burst of ultrasonic sound, which the smaller bat hears a moment later. If the large bat flies at 3.310 m/s and the small bat flies at 14.20 m/s, rank the frequency that the smaller bat detects in the four scenarios, from highest to lowest. Assume that the speed of sound is 343.0 m/s highest frequency lowest frequency In scenario C, some of the large bat's signal reflects off of the smal C bat and returns to the large bat, warning it of the smaller bat's presence. If the initial signal has a frequency of 77.30 kHz, what return frequency will the large bat detect? Calculate the final frequency to four significant figures. Number 84.392kHz Incorrect

Explanation / Answer

order of the frequency from hightest to lowest is,

       C , D , A , B

b)

The frequency heard by the small bat is

        f ' = f (V + Vo) / (V- Vs)

            = (77.3 kHz) (343 + 3.31) / (343 - 14.2)

           = 81.41 kHz

The reflected wave heard by the large bat is

          f '' = f ' (V+ Vo) / (V- Vs)

               = (81.41 kHz)(343 + 14.2) / (343 - 3.31)

               =85.61 kHz

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.