If x (t) = (u (t) ? u (t ? 4) ) ? (? (t) + ? (t ? 2) ), what is the signal energy of x?
What will be an ideal response?
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What type of heat detector responds to shifting temperatures that vary excessively beyond a predetermined value?
A. Rate-of-rise B. Rate compensation C. Fixed temperature D. Spot detector
If staples are not required to close the lap joint on duct wrap, then _____.
a. it can be secured by stitching with needle and thread b. quick-drying adhesive should be brushed on the facing tabs c. tape is wrapped around the duct wrap to hold it in place d. contact tape is used to adhere the duct wrap to the duct
What is the capacitance of a capacitor that drops 50 V and stores 0.500 ?C of charge?
A) 0.01 ?F B) 0.1 ?F C) 0.001 ?F D) 1 ?F
This problem concerns a compound which, in the vapor phase, is described by the equation of state:
PV = RT + (BP3) Where B = 0.005 L mol-1atm-2 In the liquid phase, the molar volume is constant at 0.150 L/mol. The vapor pressure can be modeled using the Antoine equation, with A=7.500, B=1400, C=225, temperature expressed in Celsius and pressure expressed in mm Hg. A) Derive an algebraic expression for the fugacity of the compound in the vapor phase, as a function of temperature and pressure. B) Use the Antoine equation to estimate the vapor pressure at 200 ?C. C) Estimate the fugacity of the compound in the liquid phase at 200 ?C and 100 atm.