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Chapter 33: Q5P (page 1001)
What inductance must be connected to acapacitor in an oscillator capable of generating(i.e., visible) electromagnetic waves? Comment on your answer.
The inductance of the oscillator is .
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Calculate the (a) upper and (b) lower limit of the Brewster angle for white light incident on fused quartz. Assume that the wavelength limits of the light are 400 and 700 nm.
If the magnetic field of a light wave oscillates parallel to a y axis and is given by, (a) in what direction does the wave travel and (b) parallel to which axis does the associated electric field oscillate?
Figure 33-74 shows a cylindrical resistor oflength,radius , and resistivity carrying current.(a) Show that the Poyntingvector at the surface of the resistor is everywhere directed normal to the surface, as shown. (b) Show that the rate at which energy flows into the resistor through its cylindrical surface, calculated by integrating thePoynting vector over this surface, is equal to the rate at which thermal energy is produced: localid="1664201793898" wherelocalid="1664201800300" is an element of the area on the cylindrical surface and localid="1664201803478" is the resistance.
A square, perfectly reflecting surface is oriented in space to be perpendicular to the light rays from the Sun. The surface has anedge lengthof andislocatedfromthe Sun鈥檚 center. What is the radiation force on the surface from the light rays?
Question: An electromagnetic wave with frequency travels through vacuum in the positive direction of an xaxis. The wave has its electric field oscillating parallel to the y axis, with an amplitude . At time , the electric field at point Pon the xaxis has a value of and is decreasing with time. What is the distance along the xaxis from point Pto the first point withif we search in (a) the negative direction and (b) the positive direction of the x axis?
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