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1. Calculate the degree of polymerization of a polyvinyl acetate polymer (mer formula C4H6O2) with amolecular weight of 28,000 amu.
2. Calculate the molecular weight of a polyvinyl chloride molecule with a degree of polymerization of400.
3. Calculate the composite modulus for polyester that is reinforced with 15% polymer fiber.
4. Calculate the (a) molecular weight, (b) coiled molecular weight and (c) extended molecular length fora polypropylene polymer (C3H6) with a degree of polymerization of 650.
5. Calculate the thermal conductivity of a composite material with 15% SiC (k = 120 W/m-K) in a Acrylic(k = 0.20 W/m-K) matrix.
calculate the mass of the sun noting that the period of the earths orbit around the sun is 3.156 107 s and its distance
the total solidification times of three casting shapes are to be compared 1 a sphere with diameter 10 cm 2 a cylinder
A typical car with a full tank of gasoline contains 10^6 BTU of chemical energy. If the car has a weight of 3500 lbf, what is the maximum speed (in miles-per- hour, 1 mile = 5,280 ft) the car could obtain by accelerating from rest neglecting drag or ..
in an orthogonal cutting experiment with a 10-degree rake angle cutting tool the chip velocity was measured to be 80 of
an adiabatic condenser a heat exchanger in a steam power plant accepts steam at 25 kpa and quality of 95 and at a mass
Take account of the intervening Nichrome and compute the heat transfer. Need we worry about the Co2 being warmed up by the methanol?
the cake batter has an average mass of 0.5 kg between before and after baking and the pyrex cake pan has a mass of 0.9
water vapor in a piston-cylinder assembly undergoes a process from saturated vapor at 150 c to a pressure of 300 kpa.
steam enters a turbine at 9 mpa and 500 celcius with a velocity of 50 ms and leaves at 20 kpa with a quality of 90
consider two identical 80-kg men who are eating identical meals and doing identical things except that one of them jogs
What are stress concentrations, what causes them, and why should engineers be concerned about them?
The initial time rate of change in the temperature of the wafer, (dTw /dt)i, is also of interest. Approximating the surfaces of the hot plate and the wafer as blackbodies and assuming their diameter transfer modes and the effect of the gap distan..
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