. A wave of sound that has a wavelength of 20 meters, and a frequency of 25 Hertz travels through the air. As it falls in water the same wave starts traveling faster at 1500 meters per second. What is the new wavelength of the wave? please answer my otger question plesase ill give brainlist orwhat ever the fwack it called​

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c