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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 closed steel bottle contains carbon dioxide at -20 degrees c x20 and the volume is 0.05 m3. it has a safety valve
find (a) the power rating of the electric heater and (b) the temperature rise that the air experiences each time it passes through the heater.
if a system has two redundant safety systems with failure rates of 0.16 and 0.22 faults per year respectively what is
a cylindrical graphite pure carbon rod of length 25 cm and initial diameter of 2 cm is inserted into a flowing air
water flows out of a large reservoir through pipe a at a rate of 15 kgs density of water 1000 kgm3 viscosity of water
to understand the physics of the o-ring we may need to start formulating the problem in a static equilibrium condition.
In a single screw extruder, rice starch, soy protein and water were mixed in the mass ratio of 60:35:5. The homogeneity of the mixture was assessed in terms of mixing index (MI). Ten random samples were drawn from the final blended mass, and starch-p..
a. show that the rate at which shaft work is obtained or required for a reversible change of state in a closed system
from time t0 to t5 hr radioactive steam is released from a nuclear power plant located at x -1 mile and y 3 miles.
air at 80 kpa and 127 degrees celsius enters an adiabatic diffuser steadily at a rate of 6000 kghr and leaves at 100
A piston-cylinder containing liquid water at 20 Celsius undergoes a constant pressure process at 25 bars, to a final temperature of 400 Celsius. Draw the T-v diagram. Determine the work and heat transfer for each of the three parts of the process (a)..
a gas refrigeration system using air as the working fluid has a pressure ratio of 5. air enters the compressor at 0
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