Two loudspeakers are placed on a wall some distance x apart. A listener stands directly in front of one of the speakers, 4m from the wall. The speakers are being driven by a single oscillator at a frequency of 300 Hz. The speed of sound is 343 m/s. What is the minimum distance x the speakers can be apart so the listener hears the waves interfering constructively

Anybody wanna ? (picture included? )

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2

Air conditioners not only cool air, but dry it as well. suppose that a room in a home measures 5.0m×9.0m×2.4m . if the outdoor temperature is 30 ∘c and the vapor pressure of water in the air is 85 % of the vapor pressure of water at this temperature, what mass of water must be removed from the air each time the volume of air in the room is cycled through the air conditioner? the vapor pressure for water at 30 ∘c is 31.8 torr.