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We plan to join two sheets of cold-worked copper by soldering. Soldering involves heating the metal to a high enough temperature that a filler material melts and is drawn into the joint. Design a soldering process that will not soften the copper. Explain. Could we use higher soldering temperatures if the sheet material were a Cu-30% Zn alloy? Explain.
Consider a three-ply laminate made of such laminae arranged at y=60 degre. Compute the submatrices [A], [B], and [D]. Take the ply thickness to be 1 mm.
The temperature outside a house is -20-C and inside it is 20-C. What is the ratio of the density of the outside air to the density of the inside air? Would in?ltration, which results from cracks around the windows, doors, and siding, etc., occur e..
a reversible carnot heat engine has 1.00 lbm of air as the working fluid. heat is received at 740 degrees f and
Oil with a specific weight of 55.0 lb /ft3 flows from A to B through the system shown in Fig. 6.35. Calculate the volume flow rate of the oil.
determine the magnitude of the force P required to move the cabinet to the right (a) if all casters are locked,
a rankine cycle operates between pressure limits of 500 and 2 psia. the temperature of the steam entering the turbine
refrigerant 134a enters a compressor at 200kpa 100 quality and exits at 1mpa 60 degrees centigrade. the speed of the
A mold has a downsprue of length = 6.0 in. The cross-sectional area at the bottom of the sprue is 0.45 in2. The sprue leads into a horizontal runner which feeds the mold cavity, whose volume = 75 in3. Determine (a) the velocity of the molten metal fl..
The flow around a model of a turbine blade is investigated. The model is five times larger than the prototype. A maximum pressure of 4 psi is measured at the leading edge, a maximum velocity of fps is measured near the top of the blade, and a small d..
A 1000 lb uniform platform is rotated by a green shaft (centered) as shown. The ends of the green shaft are each connected to a motor - one on either side of the platform. If the platform starts out from rest in horizontal position, how much torqu..
if a light bulb bought from a particular store has a 1.8 probability of being defective when it leaves the store
Water is stored in a water tower at an elevation of 1804 m above sea level. The foundation of your apartment building is at an elevation of 437 m above sea level and you live on the 9th floor, with each floor having a height of 3.3 m.
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