A sound wave that is traveling through a solid material has a frequency of 500 hz. The wave length of the sound wave is 2 meters. What is the speed of sound in the material? A. 250,000m/s

B. 250m/s

C. 1000m/s

D. 200m/s

(URGENT!! THIS IS FOR A TEST,,, WORK NOT NEEDED)

The results of huy's eye exam show that he is nearsighted. which explanation should huy expect to hear? "you need convex lenses to shorten the distance that light takes to focus in your eyes." "you need concave lenses to shorten the distance that light takes to focus in your eyes." "you need convex lenses to lengthen the distance that light takes to focus in your eyes." "you need concave lenses to lengthen the distance that light takes to focus in your eyes."