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Pure aluminum is poured into a sand mold. The metal level in the pouring basin is 10 in. above the metal level in the mold, and the runner is circular with a 0.4-in. diameter. What are the velocity and rate of the flow of the metal into the mold? Is the flow turbulent or laminar? 10.44 A cylinder with a diameter of 1.5 in. and height of 3 in. solidifies in 3 minutes in a sand casting operation. What is the solidification time if the cylinder height is doubled? What is the time if the diameter is doubled?
consider an alcohol and a mercury thermometer that read exactly 0 c at the ice point and 100 c at the steam point. the
an ideal cold air-standard brayton cycle engine operates with air entering the compressor at 27 c. the pressure ratio
a circular curve of highway is designed for traffic moving at 85 kmh. assume the traffic consists of cars without
a photomicrograph was taken at a magnification of 500x and it was determined that the average number of grains per
the atmosphere is stable with a lapse rate of -0.2 degree c100 m. the surfaces air temperature is 15 degree c. a parcel
Convert the composition of the following alloy from atom percent to weight percent (a) 44.8 at% of silver, (b) 46.3 at% of gold, and (c) 8.9 at% of Cu. Assume that the atomic weights for silver, gold and copper are, respectively, 107.87, 196.97 an..
Find the turbine's (b) isentropic efficiency (%), (c) reversible work (kJ/kg), (d) irreversibility(kJ/kg), and (e) exergy destruction (kJ/kg). (f) Draw a T-s diagram of the process
The 25-kg bar has a centre of mass at G.If it is supported by a smooth peg at C,a roller at A and cord AB, determine the reactions at these supports.
A vertical run of copper tubing, 5 mm in diameter and 20 cm long, carries condensation vapor at 60 °C through 27°C air. What is the total heat loss?
A high performance F-16 fighter is flying at Mach 0.96 at sea level. What is the air temperature at the stagnation point at the leading edge of the wing?
Product and Engineering Design Review
An airplane flies at 400 mph at 1600 ft altitude on a standard day. The plane climbs to 50,000 ft and flies at 725 mph. Calculate the Mach number of flight in both cases.
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