A laser beam is aimed at a 1.0-cm-thick sheet of glass at an angle 30° above the glass.a. What is the laser beam’s direction of travel in the glass?b. What is its direction in the air on the other side of the glass?

A ray of light traveling in air is incident at angle ua on one face of a 90.0° prism made of glass. Part of the light refracts into the prism and strikes the opposite face at point A. If the ray at A is at the critical angle, what is the value of θa?

You and your friend Kally are hiking in the Black Hills near Rapid City, South Dakota, when you stumble upon a ghost town. As you walk around, you find a well in the center of the town. The well has no pulley or rope. You look down into the well and from how dark it is you could tell that it is deep. Kally knows that you are taking physics 150 at Rio Hondo College, so she asks you to figure out the depth of the well. You take a stone and drop it into the well and you and Kally wait for the splash. Kally measures the time with her digital watch and tells you that it took 4 seconds. How deep is the well?

A laser beam shines along the surface of a block of transparent material. (See the figure .) Half of the beam goes straight to a detector, while the other half travels through the block and then hits the detector. The time delay between the arrival of the two light beams at the detector is 6.10 ns. Part A What is the index of refraction of this material? n = -- ΑΣΦ Submit Request Answer ? n = ? -2.50 m- Detector