A laser beam shines from air upon a plastic block containing…

A laser beam shines from air upon a plastic block containing a rectangular cavity filled with liquid. The sides of the cavity are parallel with the sides of the block, as shown in the diagram. The beam travels through the plastic and into the cavity. Use the data below to calculate the index of refraction for the liquid, where all angles are measured relative to the normal: I.  The beam strikes the plastic block at 50.0° to normal. II. The beam travels at 25.0° to normal inside the plastic block. III. The beam travels at 32.0° to normal inside the liquid cavity.  

The figure below shows a cylindrical bar magnet and a conduc…

The figure below shows a cylindrical bar magnet and a conducting circular wire loop that is fixed in place. The plane formed by the loop is perpendicular to the x axis. Which of the following would cause an induced current in the wire? I. Moving the magnet closer to the loop II. Rotating the magnet about the y-axis. III. Rotating the magnet about the x-axis.