The electric field of a plane wave propagating in a lossless, non-magnetic, dielectric material with a relative permittivity er=1 is given by: = 100 cos(4t10 t - kz)ux (v/m) [5 marks] q 3(a) determine the angular frequency, the frequency, the wave velocity, the wavelength and the wave vector (magnitude and direction). [10 marks] q 3(b) calculate the time domain expression for the magnetic field, h. [10 marks] q 3(c) give the time domain expression for the instantaneous poynting vector associated with this tem wave. [5 marks] q 3(d) what is the time average value of this poynting vector?

c.the charges if the proton and electron and gravity

newton's first law of motion

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!