Calculate the R-value for the following materials:
(a) 4-in.-thick brick
(b) 10-cm-thick brick
(c) 12-in.-thick concrete slab
(d) 20-cm-thick concrete slab
(e) 1-cm-thick human fat layer
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In Figure P8.27 support D is constructed 1.5 in. to the right of its specified location. Using Bernoulli’s principle in Section 8.8, compute (a) the horizontal and vertical components of the displacement of joint B and (b) the change in slope of member BC.
Why do large ammonia chillers in large scale food processing plants often use a glycol secondary refrigerant?
A) To maintain a lower compression ratio B) To maintain a higher compression ratio C) To achieve low temperatures because ammonia will not reach sub-freezing temperatures alone D) To avoid ammonia spills by limiting the ammonia charge to the chiller
Technician A says that an ASE certified truck technician is eligible to join the ATA Technology and Maintenance Council (TMC) as a technician member. Technician B says that two years of hands-on experience are required to be eligible to take ASE certification tests? Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
Can all materials exist as solids, liquids, and gases at various temperatures? Explain
What will be an ideal response?