Asound wave with a power of 8.8 × 10–4 w leaves a speaker and passes through section a, which has an area of 5.0 m2. what is the intensity of sound in this area? (intensity = i = ) 1.8 × 10–4 w/m2 1.8 × 10–6 w/m2 1.6 × 10–4 w/m2 1.6 × 10–6 w/m2

As seen in a us weather map, the h (or high) and l (or low) symbols indicate regions where surface air pressures are high or low, respectively, compared to surrounding areas. an h is plotted where the air pressure is highest and an l is plotted where the air pressure is lowest. proceeding outward and away from the center of a high pressure system, the air pressure "