Light traveling through a fluid (n = 1.238) strikes a crystal (n = 1.711). If the angle of incidence is 28.9°, calculate the angle of refraction.

What are two different ways you could find the value of a? explain these methods.

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Consider two regions of space containing a static electric field, region a and region b. in region a the equipotential lines are more closely spaced than those in region b. what can be said about the relative strength of the electric field in the two regions? a) the electric field in region a is stronger th