Symbolic answer with no numbers please. I just need a symbolic answer that does not have any numbers in it. I can plug the numbers into the equation to get the numerical number. I also need a representation or picture of the problem.

Electromagnetic radiation with wavelength A strikes a diffrac- Representation: 0 2 tion grating that has a = 500 slits/mm. On a screen located - Physics Concept(s): 0 1 2 L = 4.0m from the grating, the third-order fringes (m = +3- Initial Equation(s): 0 0.5 1 and m = -3) are located x = 35 cm apart. What is A? For Symbolic Answer: 0 the representation, make sure that you include at least the _Units Check: 0 0.5 1 first 3 orders of bright fringes, and a rough illustration of the - Neatness: -2 -1 0 intensity distribution of the interference pattern. Total: Correct Answer: Y N Representation Physics Concept(s) (Refer to the list of concepts on Carmen under modules/course documents.) (1)