Polarized light is incident on 7 polarizing sheets. the axis of the first polarized sheet makes an angle θ with the plane of polarization. each subsequent sheet has an axis that is rotated by an angle θ from that of adjacent sheets. find θ if 92% of the incident intensity is transmitted by the sheets. ° suppose you want to rotate the plane of polarization of a beam of polarized light by 65°, but you do not want the final intensity to be < 66% of the initial intensity. what is the minimum number of polarizing sheets you must use? sheets

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants