The acoustic field in a standing wave tube is given by aexp(ia-ikx)+bexp(iar tikx) where the incident wave has an amplitude of a=10 pa. the fluid in the tube is air and at the end of the tube there is an interface with a fluid that has a characteristic impedance of pc-560 rayls. what is the magnitude of the reflected wave b, and what is the difference in level between the reflected wave and the incident wave in db?

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.

Ireally don’t know

He sandals were out in the sun so the got hotter. which is why her feet felt hot.