Two speakers that are 15.0 m apart produce in-phase sound waves of frequency 240 hz in a room where the speed of sound is 340 m/s . a woman starts out at the midpoint between the two speakers. the room's walls and ceiling are covered with absorbers to eliminate reflections, and she listens with only one ear for best precision.

heat the gas and measure the pressure

the journeys of marquette, joliet and la salle a) new france expand.

all three of these explorers explored the midwest and the area around the great lakes, which they subsequently claimed for france.

this was a big portion of territory and expanded new france which before then only consisted of quebec province in northeastern canada