1.33 (3) A
way of light is incident in water al an angle of 70
water. glass place surface calculate the angle
of retraction in
glass in each case.
Langa 1.5 and a Mwa 2:33).
→ doln-
i= 70​

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?