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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.
Describe the theory used for the IZOD test and what units are used to report toughness? Explain the change in magnetic properties when steel is heated. Is this due to allotropic properties?
neglecting the effect of the fillets and of stress concentrations determine the smallest permissible diameters of the
water and ammonia streams flow through a steady state heat exchanger. the water stream enters the heat exchanger with a
piston having a diameter of 5.48 inches and a length of 9.50 in slides downward with a velocity v through a vertical
Assuming that ƒ≈ 0.019, find the flow rate (which results in a cubic polynomial). Explain why there are two legitimate solutions.
a counterflow concentric tube heat exchanger is designed to heat water from 20 to 80 degc using hot oil which is
What elution mechanisms were considered by the authors?
a first-order system is subjected to a harmonic input of 3hz. the system has a time constant of 0.5s. calculate the
An amount, P, must be invested not to allow withdrawals of $1,000 per year for the next 15 years and to permit $300 to be withdrawn starting at the end of year 6 and continuing over the remainder of the 15-year period as the $300 increases by 6% per ..
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
peg p is driven by the fork link oa along the curved path described by r etheta m. when theta pi 4 rad the angular
A vertical plate 2.5 m high, maintained at a uniform temperature of 54°C, is exposed to saturated steam at atmospheric pressure.
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