assume a plane wave and plot the two dimensional spot size of a gaussian beam as a function of the x and y using a spot size (w) of 20. assume the plane wave has a value of1. using the matlab function "mesh" plot the x, y,e such that you get a 3 d color plot. run z-eo.*.a2.+y. a2.)/w.42)

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.