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.

You are about to open a container of soy milk but notice that there are instructions to “shake well before serving.” the soy milk is most likely a

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)

If the new moon happens on january 15th, what shape will it be on february 6th?