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A volcano has erupted, spewing stones, steam, and ash several thousand feet into the atmosphere. After some time, the particles begin to settle to the ground. Consider a nearly spherical ash particle that is 50 microns in diameter, falling in air whose temperature is -50°C and whose pressure is 55 kPa. The density of the particle is 1240 kg/m3. Estimate the terminal velocity of this particle at this altitude.
a piston-cylinder device contains 0.8 kg of steam at 300degc and 1 mpa. steam is cooled at constant pressure until
a 20 cm diameter sphere is made of a heat-generating material that produces 106 wm3. the sphere is cooled by 20oc air
a pitot-static tube used to measure air velocity is connected to a differential pressure gage. if the air temperature
consider a thermodynamic system executing the two reveraible proceses shown in the sketch ab and adb. what is the heat
Air is contained in a piston-cylinder assembly, initially at 40 lbf/in^2. And 600R the air expands in a poly tropic process with n=k=1.4 until the volume is doubled. Modeling the air as an ideal gas with constant specific heats,
conventional ceramics have a fracture toughness of about 5 while advanced ceramics may have 20. determine1 how larger
consider x norm57 y norm57 and z norm19 and assume xy and z are independent.1 find and sketch the probability
a vertical piston-cylinder device initially contains 0.25 m3 of air at 600 kpa andnbsp300degc. a valve connected to the
The capillary rise, h, of a liquid in a tube varies with tube diameter, d, gravity, g, fluid density, roe , surface tension, Y, and the contact angle, B. (a) Find the dimensionless form of this statement. (b) If h = 3 [cm] in a given experiment, what..
a 5 ft3 tank containing steam at 14.7 psia 1 quality is fitted with a relief valve. heat is transferred to the tank
a brayton cycle uses air and produces a net work of 14000 btus with an inlet state of 60f 14.7 psi and a compression
a room has walls and a ceiling that conduct heat from the room to the cooler outdoors. if the inside temperature is
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