Given that vC(0) = 2cos(155°) V, what is the instantaneous voltage across a 2-?F capacitor when the current through it is I = 4 sin (10? t + 25°) A?
What will be an ideal response?
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Determine the U-factor of the following roof assembly. The opaque part of the assembly, with an area of 2,500 ft2, has an overall R-value of 35. There is a skylight in the roof, which has an area of 100 ft2, and its overall R-value is 2.0.
What will be an ideal response?
It is illegal to have pet gerbils in California
Indicate whether the statement is true or false
Where do commercial refrigeration "rack" systems get their name?
A) They use multiple compressors mounted in a row on a rack. B) They use multiple individual condensing units mounted on a large rack outside. C) RACK stands for Refrigeration Air Conditioning Kontrol. D) They were originally developed by Refrigeration of Ackworth Corporation.
When preparing weld coupons for V-groove welds with backing, cut the metal backing strips so that they
are at least _____. a. 1" × 3" (25.4 mm × 76.2 mm) b. 1" × 8" (25.4 mm × 203.2 mm) c. 2" × 8" (50.8 mm × 203.2 mm) d. 3" × 8" (76.2 mm × 203.2 mm)