Show that ˜e t (r, t) = ˜e0t e−κzei (kx−ωt), (9.201) where κ ≡ ω c $ (n1 sin θi )2 − n22 and k ≡ ωn1 c sin θi . (9.202) this is a wave propagating in the x direction (parallel to the and attenuated in the z direction.

Does anyone know how to do geometryme with this problem

Beth divided 9 ounces of her granola recipe into 4 equal-sized amounts. she placed the amounts into individual bowls. the fraction 9/4 represents the number of ounces of granola in each bowl. which other number represents the amount of granola beth has in each bowl? (a) 1 1/4 (b) 2 1/4 (c) 1 3/4 (d) 3 3/4 i need !

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.