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Answer all parts for 100% feedback !!!
(7%) Problem 14: A bat, flying at 4.8 m/s, pursues an insect that is flying at 1.9 m/s in the same
direction. The bat emits a 49000-Hz sonar pulse. Take the speed of sound to be 343 m/s AAt
what frequency, in hertz, does the bat hear the pulse reflected back from the insect? Grade
Summary Deductions Potential 0% 10096 sin0 cotan0asin acos0 atan acotan) sinhO cosh0 tanh
cotanh0 cosO Submissions Attempts r (5% per attempt) detailed view emaining: 5 END Degrees
Radians NO DELI CLEAR Submit Hint I give up! Hints: 2% deduction per hint. Hints
remaining: 2 Feedback: 2% deduction per feedback.
Solution
Frequency of sound heard by the insect= 49000*(343-1.9)/(343-4.8)= 49420Hz
This then reflected and Frequency of sound heard by the bat reflected back from the insect=
49420*(343+4.8)/(343-1.9)= 50391Hz
(that's all the parts, if you feel parts are missing then ask in comments)

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Answer all parts for 100- feedback !!! (7-) Problem 14- A bat- flying.docx

  • 1. Answer all parts for 100% feedback !!! (7%) Problem 14: A bat, flying at 4.8 m/s, pursues an insect that is flying at 1.9 m/s in the same direction. The bat emits a 49000-Hz sonar pulse. Take the speed of sound to be 343 m/s AAt what frequency, in hertz, does the bat hear the pulse reflected back from the insect? Grade Summary Deductions Potential 0% 10096 sin0 cotan0asin acos0 atan acotan) sinhO cosh0 tanh cotanh0 cosO Submissions Attempts r (5% per attempt) detailed view emaining: 5 END Degrees Radians NO DELI CLEAR Submit Hint I give up! Hints: 2% deduction per hint. Hints remaining: 2 Feedback: 2% deduction per feedback. Solution Frequency of sound heard by the insect= 49000*(343-1.9)/(343-4.8)= 49420Hz This then reflected and Frequency of sound heard by the bat reflected back from the insect= 49420*(343+4.8)/(343-1.9)= 50391Hz (that's all the parts, if you feel parts are missing then ask in comments)