Which of the following is related to a sound's pitch?

Give an example in which the electrical energy changes to light energy

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?

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 "