Abeam of green light is made to pass through two slits that are 5.0 x 10−3 meters apart. on a screen 4.0 meters away from the slits, an interference pattern appears with bands of light separated by 4.2 x 10−4 meters. what is the wavelength of the light? 3.6 x 10−8 m 5.9 x 10−7 m 5.3 x 10−7 m 3.9 x 10−6 m

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?