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An antenna in the form of a circular disk of diameter 18.0 m receives (at normal incidence) a radio signal from a distant source. The radio signal is a continuous sinusoidal wave with an electric field amplitude Emax = 0.350 V/m. Assume the antenna absorbs 80.0% of the radiation that falls on the dish.
(a) What is the amplitude of the magnetic field of the wave?
(b) What is the intensity of the radiation received by the antenna?
(c) What is the average power received by the antenna?
(d) What is the radiation pressure on the antenna?
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Assume the mirror is misaligned, so that the actual angle between the normal to the surface and due south is too large by 0.0020 degree. Find by how many meters will the reflected ray miss the detector
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A dedicated sports car enthusiast polishes the inside and outsidesurfaces of a hubcap that is a section of a sphere. When he looksinto one side of the hubcap, he sees an image of his face 30.0 cmin back of the hubcap. He then turns the hubcap over..
A particle with charge of 34.7µC is placed at the center of a spherical shell of radius 25.0 cm. What is the total electric flux through the surface of the shell
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To focus a camera on objects at different distances, the converginglens is moved toward or away from the image sensor, so a sharpimage always falls on the sensor.
A metal rod 6.00 m long is held in a horizontal position. what is the torque exerted on the rod by the tension in the rope
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