A rectangular slab of glass with unknown index of refraction is on top of the surface of a liquid that also has an unknown index of refraction. A light beam is incident from air into the glass such that the part of the beam that strikes at the glass/liquid boundary is incident at the critical angle which is 65 degrees. The angle of incidence between the air/glass boundary is 40 degrees. Required:
a. Determine the index of refraction of the glass.
b. Determine the index of refraction of the liquid.

Explain how plate tectonics have changed earth’s surface over time. include the role of plate tectonics in the creation of landforms.

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.

Which one of the following terms is used to indicate the natural tendency of an object to remain at rest or in motion at a constant speed along a straight line? velocity acceleration equilibrium force inertia