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An air-hockey puck has a mass of 0.01 kg and a diameter of 90 mm. When it is placed on the air table, an air film of 0.10 mm thickness is created under the puck. The air temperature is 15 degrees C. Assume that the puck is hit with an initial speed of 8 m/s. How long will it take the puck to stop? What distance will the puck have travelled before stopping?
refrigerant 22 is used in the evaporator pipe of a commercial refrigeration unit. at steady state it flows at a rate of
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?
a circular steel bar is axially loaded. it has a diameter of 2 in. a modulus of elasticity of 29x103ksi and a shear
air flows into the narrow gap of height h between closely spaced parallel disks through a porous surface as shown. use
a steam power plant operates with a boiler output of 20 kgs steam at 2 mpa 600degc. the condenser operates at 50degc
an air pump with a 4-in piston and a 12-in stroke compresses atmospheric air into a 5ft3 evacuated tank. assume no
horizontal motion of the piston rod of the hydraulic cylinder in figure 7 controls the rotation of link ob about o. for
Describe the machinability evaluation criteria, is it a quantitative or qualitative evaluation and describe the High Speed Machining of Steel/Iron or Aluminium
the cost of sending a package by an express delivery service is s12.00 for the first two pounds and 4.50 for each pound
a 1.5 inch thick steel plate and a 0.5 inch thick cast iron plate are compressed with 14- 20 unc grade 5 bolt and
a cylindrical pressure tank 15 feet long and 40 inches in mean diamater is to be fabricated from .5 inch steel. a 15
a heat engine is operating on a carnot cycle and has a thermal efficiency of 75 percent. the waste heat from this
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