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1. Write an essay on polymeric materials that are used in the packaging of food products and drinks. Include a list of the general requisite characteristics of materials that are used for these applications. Now cite a specific material that is utilized for each of three different container types and the rationale for each choice.
2. Write an essay on the replacement of metal- lic automobile components by polymers and composite materials. Address the fol- lowing issues: (1) Which automotive com- ponents (e.g., crankshaft) now use polymers and/or composites? (2) Specifically what materials (e.g., high-density polyethylene) are now being used? (3) What are the rea- sons for these replacements?
point a on circuilar disk is at angular position theta 0 at time t 0. disk has angular velocity omega 0.1 rads at t
pump a can empty a tank in four hours while pump b takes only three hours to empty the tank. how long will it take to
calculate the linear density atomsnm of atoms along the family of directions that lie within the 110 plane in i bcc
The ordinates of a 3hr unit hydrograph of a basin at 6 hr interval are given below. You are required to derive the storm hydrograph due to a 3 hr storm with a total rainfall of 15 cm. Assume an initial loss of 0.5 cm and aφindex of 1 cm/ hr. Ta..
for incompressible liquids flow work could usually be neglected in the steady-flow energy equation. in the trans-alaska
consider the air conditioning of a house through use of solar energy. at a particular location the flux of solar
gold and silicon are mutually insoluble in the solid state and form a eutectic system with at eutectic temperature of
State what the joints are in the system and knowledge of computational kinematics explain what you believe is the procedure to calculate each variable.
Air enters a control volume at a pressure of 19000lbf/ft^2, a velocity of 80ft/s and a temp of 440 degrees F. the area through which the air flows is .05 ft^2. The air behaves as an ideal gas. Determine the mass flow rate in lb/s.
a piston cylinder of 0.5 m3 contains water with quality 50 at 200 kpa. slow expansion is performed while there is heat
an automobile is modeled as a single-degree-of-freedom system vibrating in the vertical direction. it is driven along a
the weather drops to 5 degrees celcius t1 so to keep warm you offer to make hot soup for the entire group. the
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