Light is incident from air on the surface of a glass slab. In the air the light beam makes an angle of 30° with the normal to the surface, while in the glass the angle is 25°. What is the index of refraction of the glass?​

An object's buoyant force and weight mean the same thing.a. trueb. false

A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.

What is part of a line has one endpoint and continues in one direction?