Projektarbeit aus dem Jahr 2022 im Fachbereich Physik - Akustik, Note: 12, , Veranstaltung: physics, Sprache: Deutsch, Abstract: Sound is the vibration of medium(solid, liquid and gas) that reaches our ears .Where the noise is unwanted or excessive sound. In developing country like NEPAL experience several environmental problems. These environmental problems include air, water and noise pollution....