Consider aplane wave in a lossless material and the phasorof the magnetic fieldisgiven by 30ˆ(58)jzsjeHxA/mat a frequencyof 300 MHz. Assume also that youknow themaximum value of the electric fieldof such a plane wave to be equal to 900 V/m.(a) Find the parameters: wavenumber  ,Impedance of the material /  , wavelength , phase velocityv, and relative permittivityand permeability of such wave.(b) Find the value of the time domain electricfield ( , )Eztat t= 10 ns, z = 1m.

Identify two factors that determine the rate of stream erosion

This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal. find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

Atomic nuclei of almost all elements consist of