What is he current supplied to the speaker
An 8 Ohm speaker is connected across the output terminals of a power amplifier that delivers 72 W. What is he current supplied to the speaker (in A)?
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A refrigerator in a kitchen at 20 degrees celcius uses R-134a. The freezer is to be kept at -5 degrees celcius or cooler. What is the maximum pressure that can be used in the evaporator? Why?
What does the area-velocity relationship tell us about flow in a supersonic wind tunnel? What is the throat, and what is its critical property?
If the duct surface temperature is maintained constant at 400 K, calculate the heat transfer to the air and the exit air temperature.
Based on the data set provided, provide a substantive narrative explanation of the process involved in creating the frequency distribution table and the frequency histogram.
Describe some of the issues or concerns (at least three) which would be addressed in deciding how to perform a statistical test of a hypothesis:
What is separation and what causes it? What are the differences between laminar and turbulent flow and their respective boundary layers?
Discuss the implications of: magnitude (from 0 to 1); sign ( + or -); and probability versus causality for the Correlation Coefficient (also known as the Pearson Product-Moment Correlation Coefficient).
The air temperature is maintained constant at 25 oC during this process as a result of heat transfer to the surroundings at 17 oC. Determine the entropy change of the air.
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