two in-phase loudspeakers are placed along a wall and are separated by a distance of 4.00 m. they emit sound with a frequency of 514 hz. a person is standing away from the wall, in front of one of the loudspeakers. what is the closest nonzero distance from the wall the person can stand and hear constructive interference? the speed of sound in air is 343 m/s.

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.