Find, in square feet, the floor area illustrated in this diagram.
ANS: 128
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The inner and outer surfaces of a 25-cm-thick wall in summer are at 27°C and 44°C, respectively. The outer surface of the wall exchanges heat by radiation with surrounding surfaces at 40°C and by convection with ambient air also at 40°C with a convection heat transfer coefficient of 8?W/m2•K. Solar radiation is incident on the surface at a rate of 150?W/m2. If both the emissivity and the solar absorptivity of the outer surface are 0.8, determine the effective thermal conductivity of the wall.
What will be an ideal response?
Which of the following are not pillars of the U.S. position in the Doha Round:
a. Increased market access. b. Eliminate export subsidies. c. Eliminate multifunctional subsidies. d. Substantially reduce trade-distorting domestic support. e. Enhance developing countries' integration into WTO.
Alternating current is typically available in:
A) Single-phase, two-phase, and three-phase. B) Single-phase and three-phase. C) Unphased, positive-phased, and negative-phased. D) Single-phase and two-phase.
An oxyfuel cutting torch should be checked for leaks _____
a. each time it is used b. once a week c. every month d. after 1,000 hours