The nucleus is full of protoplasm, it is enclosed in a double membrane, and most likely found in eukaryotic cells. It consists of neutrons and protons. And also the nucleus also controls what you do, its basically the "brain of cells." It can control you, whether you're using the bathroom or reproducing, it also directs your metabolism. Hope this helped. (I know I used the word "it" to much.)
Use: dsin(θ) = mλ where d is slit separation, m is fringe order (1 here), and θ = 0.183 Now λ = dsin(θ) /m = (0.215e-3)(sin(0.183))/1 = 6.867e-7 or λ = 687.7nm (red laser)
