The Hoover Dam generates more than 4 billion kWh a year. How many 18.5 W LED light bulbs could be powered in a year by the Hoover Dam’s power plant?
What will be an ideal response?
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What is its temperature at another section where its velocity is 50 
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An ideal gas flows through a horizontal tube at steady state. No heat is added and no shaft work is done. The cross- sectional area of the tube changes with length, and this causes the velocity to change. Derive an equation relating the temperature to the velocity of the gas. If nitrogen at 150°C flows past one section of the tube at a velocity of 2.5 
Assume 
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The ____________________ is an area that is made intentionally wet for some specific purpose.
Fill in the blank(s) with the appropriate word(s).
_________ is a very forgiving material in earthquakes; it tends to bend and return to its original shape.
A. Wood B. Concrete C. plywood D. steel
For the circuit shown in Figure P2.23, determine the power absorbed by the 5 ? resistor.
