Light passes from a material a, which has an index of refraction of 4/3, into material b, which has an index of refraction of 5/4. if the angle of incidence is 30°, what is the angle of refraction? (a) 14.1° (b) 32.2° (c) 28.4° (d) 46.0° (e) 51.0°

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

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.