The following items are positioned in sequence: a source of a beam of natural light of intensity i0, three ideal polarizers a, b, and c; and an observer. polarizer axis angles are measured clockwise from the vertical, as viewed by the observer. the axis angle of polarizer a is set at 0° (vertical), and the axis angle of polarizer c is set at 50°. the axis angle of polarizer b is set at 120°. what is ratio of the intensity of the beam at the observer to the intensity i0 of the source?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .

Most of the volume of an atom is occupied by the