Acrude model of the human throat is that of a pipe open at both ends with a vibrating source to introduce the sound into the pipe at one end. assuming the vibrating source produces a range of frequencies, discuss the effect of changing the pipe's length.

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation 2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!