Engineering, 07.11.2019 05:31 davienwatson8
Apackage is made of three ears of corn by placing them on a styrofoam tray and enclosing them with plastic wrap. the exposed area is 500 cm2. it is desired to keep moisture losses below 1% of the total water content estimated at 100 g per package for a shelf life of 2 weeks. assume the diffusivity of water vapor through the plastic wrap is 2.0 × 10-4 cm2/s and a constant internal saturation vapor pressure of 23.8 mmhg (25oc) and zero external moisture. what thickness of wrapping is needed to fulfill this requirement? is this reasonable? if not, what could you do to try to fulfill the requirement?
Answers: 2
Engineering, 04.07.2019 18:10, bckyanne3
Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.
Answers: 1
Engineering, 04.07.2019 18:10, siri5645
At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.
Answers: 1
Engineering, 04.07.2019 18:10, redrosesxx
Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux
Answers: 3
Engineering, 04.07.2019 19:10, kayleeemerson77
Analyze the factors that influence the choice between the following pairs of processes to make the products indicated: i) sand casting versus die casting of an electric-motor housing ii) thread rolling versus machining of a bolt for high-strength application. (co3/c5)
Answers: 3
Apackage is made of three ears of corn by placing them on a styrofoam tray and enclosing them with...
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