O 5/7/2015 11 50 PM A 95.4/100 5/7/2015 05:13 PM Gradebook Print l Calculator Pe

Question

O 5/7/2015 11 50 PM A 95.4/100 5/7/2015 05:13 PM Gradebook Print l Calculator Periodic Table X incorrect X incorrect X incorrect X incorrect X incorrect X incorrect X Incorrect X Incol Question 18 of 19 Incorrect Map pling 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 3.090 m/s and the small bat flies at 14.80 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 D lowest frequency In scenario C, some of the large bat's signal reflects off of the small C bat and returns to the large bat, warning it of the smaller bat's presence. If the initial signal has a frequency of 24.30 kHz, what return frequency will the large bat detect? Calculate the final frequency to four significant figures. There is a hint available! bottom divider bar. Click on the divider bar again to hide the hint. kHz Close O Previous ® Give Up & View solution Check Answer Next H Ext Hint

Explanation / Answer

Here ,

as the frequency heard by the smaller bat is given as

f = f0 * (Vrelative + Vsound)/Vsound

Now , the frequency is highest for highest Positive relative velocity

and lowest for smallest relative velocity ,

Hence , the order of frequency heard from highest to lowest is

C > D >A >B

Now, in case C .

f = f0 * (2*Vrelative + Vsound)/Vsound

f = 24.3 * (2 * (3.090 + 14.80) + 343)/343

f = 26.83 KHz

the final frequency is 26.83 KHz

Related Questions

Navigate

• Browse (All)
• Browse O
• Subjects

---

---

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