Two separate speakers each produce 524 hz notes (the c above middle c)in air on earth. the sounds would be perfectly in phase if the speakers were placed next to each other. if both speakers are pointing in the same direction and directly at you, then how far apart would they have to be placed in order for you to experience total deconstructive wave interference

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.