Light travels at 3.0 × 108 m/s in a vacuum and slows to 2.0 × 108 m/s in glass. what is the index of refraction of glass?

Avehicle has an oil leak that is causing the entire oil pan to be wet, but inspection reveals no exact source after cleaning off the oil residue. technician a says to install a fluorescent dye in the crankcase and operate the engine, then re-inspect for leaks with a special light (black light). technician b says the oil leak may be coming from a source at the top of the engine, such as a valve cover gasket. who is correct?

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?