This worksheet is designed to accompany Quick Question 23.5. [br][br]Set [math]Input_1[/math] and [math]Output_1[/math] to desired distance (say, 20 m) and intensity (30 W/m^2) respectively by clicking on each point and using the arrow keys on your keyboard to move the points to the appropriate location. Set [math]Input_2[/math] in the same manner. When the distance is doubled, how does the intensity change?