Aglass plate whose index of refraction is 1.66 is immersed in a liquid. the surface of the glass is inclined at an angle of 44º with the vertical. a horizontal ray in the glass is incident on the interface. when the liquid is a certain alcohol, the incident ray arrives at the interface at the critical angle. the index of refraction of the alcohol is closest to: o a. 1.13 ob. 1.17 o c. 1.15 o d. 1.11

Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than

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?

You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked