A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of the lake. She hears the echo 1.5 s after shouting. Estimate the length of the lake.© BrainMass Inc. brainmass.com October 16, 2018, 4:41 pm ad1c9bdddf
The expert examines linear superposition and interference calculations. The length of the lake is estimated.
Linear Superposition and Interference Phenomena
The location of the speakers in this problem is what's throwing me off.
Two speakers, one directly behind the other, are each generating a 245-Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? The speed of sound is 343 m/s.View Full Posting Details