Wave base is considered . Group of answer choices the depth where wave energy diminishes to zero the part of the wave that is 1/4 of the wavelength the seafloor the base of the wave where energy is the greatest

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray