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.

What is the conversion factor between kg/m^3 and g/m^3. express your experimental values for the densities in kg/m^3.

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c