Let x(t) = 10sinc(500t) and form a signal, 
What will be an ideal response?
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The light striking a pane of glass is refracted as shown in Figure 4.20. The law of refraction states that na sin ?a = nb sin ?b, where na and nb are the refractive indexes of the materi-als through which the light is passing and the angles are from a line that is normal to the surface. The refractive index of air is 1.00. What is the refractive index of the glass?
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A room is heated by a baseboard resistance heater. When the heat losses from the room on a winter day amount to 7000?kJ/h, it is observed that the air temperature in the room remains constant even though the heater operates continuously. Determine the power rating of the heater in kW.
What will be an ideal response?
Most hydronic heating systems are:
A) Closed piping systems. B) Closed systems in cooling and open in heating. C) Open piping systems. D) Open systems in cooling and closed systems in heating.
Traditionally, a blueprint of an original drawing, which may be made on high-quality paper, vellum, and acetate or polyester film, is produced by exposing the drawing to ____.
A. a strong light source B. a weak light source C. strong magnets D. ammonia