The capacity (tonnage) of the heat exchanger can vary with its height and depth.
Answer the following statement true (T) or false (F)
False
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A piston-cylinder device initially contains 100 moles of an ideal gas at T = 353.15 K and P = 0.1 MPa. The ideal gas has CP* = (7/2)R. Heat is added and the gas expands isobarically until its volume is twice its initial volume. How much heat was added?
A. -561. kJ B. 1 MJ C. 233. kJ D. 2 MJ E. Insufficient information to solve
For t < 0, the circuit shown in Figure P5.39 is at DC steady state. The switch is opened at t = 0. Determine the current iL through the inductor for all time. Assume:
VS = 12V L = 100mH
R1 = 400? R2 = 400?
R3 = 600?
No se deben pintar las escaleras de madera porque la pintura:
a. hace que sea difícil transportar la escalera. b. no es buena para la madera. c. es una sustancia peligrosa. d. puede ocultar defectos y fallas.
All of the following statements are true EXCEPT:
A. there are two O-rings on the male coupling. B. ferrules are used to form the threads on the outside of a pipe. C. after hand-tightening pieces of pipe, tighten further a minimum of 2-1/2 turns. D. pipe is cut with a pipe cutter.