A guitar string produces a sound wave with a frequency of 1220 hz. if the speed in the. air is 331 m/s whats the wavelength of the sound wave PLEASE ANSWER IN DETAIL WILL BE GIVEN

In a system, when potential energy decreases, then entropy also decreases. true false

Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance

Am i correct on these two physics questions?