Light passes with an angle of incidence of 29.0 degrees from the air (n= 1.00) into water (n = 1.33). what is the angle of refraction?

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

During takeoff, the sound intensity level of a jet engine is 170db at a distance of 34 m. what's the sound intensity level at a distance of 1.0 km?

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2