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A flavor compound is held within 5mm diameter time-release sphere. The sphere is placed in a liquid food and will release the flavor compound after one month of storage at 20C. The concentration of flavor within the sphere is 100% and mass diffusivity for the flavor compound within the liquid food is 7.8 X 10^-9 m2/s. Estimate the steady state mass flux of flavor into liquid food from surface of time-release sphere. The convective mass transfer coefficient is 50 m/s.
providing domestic hot water to a household typically requires 107 kj of energy per year. a typical electric water
Use a suitable method to predict the racS,T variation along these plates when a= e= 0.1, 0.5, and 0.8 and emissions and reflections are diffuse.
For a vehicle in gravitationless space, determine the mass ratio necessary to boost the vehicle velocity by 1600 m/sec; the effective exhaust velocity is 2000 m/sec and the initial total vehicle mass is 4000 kg.
What strategies could be used to counteract the increased Nitric oxides emissions with ethanol blended petrol?
a projectile is launched straight upward at 73.5 ms from a height of 93.0 m at the edge of a sheer cliff. the
car a is traveling at va130kmh as it passes a police officer in car p but over the next 5 seconds the car uniformly
a particle travels along the circular path xsup2ysup2rsup2. if the y component of the particles velocity is vy2rcos2t
a cylindrical container has a 4.5 inch diameter and weighs 0.4 lbf when empty. when the cylinder is filled to a depth
two kg of ammonia are compressed adiabatically from a saturated vapor state at 20o c. the dead state is p0 1 bar t0
air enters a compressor at ambient conditions of 100kpa and 17 degc with a low velocity and exits at 1mpa 327 degc and
1.a turbine receives 0.1 kgs of hot air at 55 ms velocity at 1.4mpa and 900k. the air leaves at 225ms and 200 kpa and
(a) Draw and label a schematic of the system. (b) Determine the mass flow rate (kg/s) of water vapor neededand (c) the rate of exergy destruction (kW)
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