A periodic wave travels from one medium to another. Which pair of variables are likely to change in the process?

A.
velocity and wavelength

B.
velocity and frequency

C. frequency and wavelength

D. frequency and phase

E. wavelength and phase

With math question will mark brainliest question in the pic.

Radii ok and nl are perpendicular to om because of the radius-tangent theorem. by definition of perpendicular, angles kom and lnm are right angles. this means that triangles kom and lnm are right triangles. angle lmn is common to both right triangles, so by the triangles kom and lnm are similar.

Roger and natalie travel in similar cars. roger's car drives the two miles to school in 7.5 minutes. natalie drives the same distance in the opposite direction but in only 6.5 minutes. what is true of their velocities?