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At a beach the light is generally partially polarized due to reflections off sand and water. At a particular beach on a particular day near sundown, the horizontal component of the electric field vector is 2.3 times the vertical component. A standing sunbather puts on polarizing sunglasses; the glasses eliminate the horizontal field component.
(a) What fraction of the light intensity received before the glasses were put on now reaches the sunbather"s eyes?
(b) The sunbather, still wearing the glasses, lies on his side. What fraction of the light intensity received before the glasses were put on now reaches his eyes?
A 50.0 g ball of copper has a net charge of 1.7 µC. What fraction of the copper's electrons have been removed
A 1200 turn coil in a dc motor has an area per turn of 1.1 * 10-2m-2. What is the current in the coil
a capacitor with a charge of 5 microcoulombs has its terminals shortened by a metal wire so that the charge flows off
A satellite orbits a planet of unknown mass in a circle of radius 2.0*10^7m?The magnitude of the gravitational force on the satellite from the planet is 74 N. What is the kinetic energy of the satellite in this orbit
consider a system of two lenses. The first lens is a converging lens with a focal length f1=21.4 cm. compute is the image real or virtual
A camera lens is initially set at f/16 for a shutter speed of 1/60 second. determine the proper shutter speed at this setting
A light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 85.3°. Find the dispersion of the slab
A mass resting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. Find the value of the period of its oscillation
The maximum speed for a van of mass 1200 kilogram going around a horizontal curve of radius 120 m is 79 kilometer per hour. Find coefficient of friction between road surface and car tires
Two converging lenses are separated by 24.80 cm. Determine the final image distance relative to the lens on the right
The critical angle for total internal reflection at a liquid-air interface is 40.0. If a ray of light traveling in the liquid has an angle of incidence at the interface of 38.0, what angle does the refracted ray in the air make with the normal
A wire with a current of 4.90 A is to be formed into a circular loop of one turn. what is the required radius
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