The theory of the wave nature of light proposed by christiaan huygens was not readily accepted by many of the early physicists. in order to support his theory, huygens had to explain the many behaviours of light using his theory. discuss how huygens explained the following properties of light using his wave theory and its postulates: reflection, refraction, dispersion, diffraction, and partial reflection– refraction, rectilinear propagation.

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow