Light of wavelength 535 nm passes through a single slit of width
2.00 x 10-5 m. What is the angle
between the first (m = 1) and third
(m = 3) interference minima?

PLEASE HELP !

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?