(10%) Problem 9: A student standing in a canyon yells \"echo\", and her voice pr
ID: 1793629 • Letter: #
Question
(10%) Problem 9: A student standing in a canyon yells "echo", and her voice produces a sound wave of frequency off= 0.51 kHz. The echo takes t = 2.8 s to return to the student. Assume the speed of sound through the atmosphere at this location is v = 340 m/s. Randomized Variables f= 0.51 kHz t = 2.8 s v=340 m/s 33% Part (a) What is the wavelength of the sound wave in meters? Grade Summary Deductions Potential 0% 100% sin() cos() tan() cotanasinaco atan) acotan() sinh(. cosh)tanh) cotanhO Submissions Attempts remaining: 5 (5% per attempt) detailed view s0 Degrees Radians VO BACKSPACE CLEAR Submit Hint I give up! Hints: 5% deduction per hint. Hints remaining: 2 Feedback: 5% deduction per feedback 33% Part (b) Input an expression for the distance, d, the canyon wall is from the student. 33% Part (c) How many wavelengths are between the student and the wall?Explanation / Answer
(A) wavelength = v / f
= 340 / (0.51 x 10^3)
= 0.667 m
(B) d = v t / 2
(C) d = 340 x 2.8 / 2 = 476 m
n = d / wavelength = 714 wavelenths
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.