Aspherical electromagnetic wave has the electric field given by ε(r,0.6,t)-eo sin θ[cosu-isinu)φ, where uzkr-at and ω s. ck. state, without calculation, what v-e for such a wave should be equal to. (a) v. e - explain briefly, the physical meaning of the poynting vector. (b) дв ot (c) by using vxe-find find the magnetic field b associated with this wave. sin u (the following may be useful: jcos u di m and jsin u di (b)determine the poynting vector s

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

Abeverage can is made of 3004-h19 aluminum alloy (elastic modulus 69 gpa, tensile yield strength 285 mpa, density 2.72 g/cm^3). the dimensions on the can are approximated as a thin-walled cylinder with a height of 4.83 inches, diameter of 2.60 inches. empty the can has a mass of 14.2 g. determine: a. the wall thickness of the cylinder b. assuming a pinned-pinned condition what is the critical load? c. assuming a fixed-fixed condition what is the critical load?

If you let go of the notebook after lifting it, will it move? how?