The walls of a prison cell are perpendicular to the four cardinal compass directions. On the first day of spring,
(a) With what speed does the illuminated rectangle move?
(b) The prisoner holds a small square mirror flat against the wall at one corner of the rectangle of light. The mirror reflects light back to a spot on the eastern wall close beside the window. How fast does the smaller square of light move across that wall?
(c) Seen from latitude of 40.0° north, the rising Sun moves through the sky along a line making a 50.0° angle with the southeastern horizon. In what direction does the rectangular patch of light on the western wall of the prisoner’s cell move?
(d) In what direction does the smaller square of light on the eastern wall move?
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Question Posted: January 27, 2010 23:59:33