A concrete monument in the shape of a regular pyramid with a square base weighs 12,800 pounds. The monument is 6.50 feet high. Compute the length of a base side rounded to 3 significant digits. Concrete weighs 137 pounds per cubic foot.
Fill in the blank(s) with the appropriate word(s).
6.57 ft
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Which of the following is true for an Eaton hybrid electric system?
A. The Eaton hybrid electric system is a parallel hybrid system. B. An Eaton UltraShift AMT with electronic clutch actuator (ECA) is used as the transmission. C. The inverter converts 340V DC into a variable-frequency three-phase AC voltage. D. All of the above are true.
A system undergoes a process such that 200 kJ of work is done on the system while 400 kJ of heat leaves the system. What is the change in the internal energy of the system?
A) 400 kJ B) 200 kJ C) ?200 kJ D) ?400 kJ
Which of the following statements is LEAST-Likely true?
A. Copper-plated sheet steel is used to make the tubing used for brake lines. B. Seamless tubing is one type of tubing made by rolling the steel sheet until it has two layers and one seam, providing a double wall. C. Sometimes the outside of brake tubing is surrounded by a coil of wire. D. Most brake tubing used on automobiles has an I.D. of 3/16" (4.76 mm).
If an air-cooled condenser, equipped with a condenser flooding valve, experiences a drop in outside temperature, how will the condenser flooding valve react?
What will be an ideal response?