The 7492 MOD-12 ripple counter is made up of two internal counters. They are
A) divide-by-2 and divide-by-4. B) divide-by-2 and divide-by-6.
C) divide-by-2 and divide-by-8. D) divide-by-2 and divide-by-5.
B
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The rate of heat loss through a unit surface area of a window per unit temperature difference between the indoors and the outdoors is called the U-factor. The value of the U-factor ranges from about 1.25?W/m2•K (or 0.22?Btu/h•ft2•°F) for low-e coated, argon-filled, quadruple-pane windows to 6.25?W/m2•K (or 1.1?Btu/h•ft2•°F) for a single-pane window with aluminum frames. Determine the range for the rate of heat loss through a 1.2-m × 1.8-m window of a house that is maintained at 20°C when the outdoor air temperature is ??8°C.
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Which of the following can be determined through a property known as the linear coefficient of thermal expansion?
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