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For a given polymeric material, the oscillatory shear measurements provide G=2104(+ 90)/(1++90) and G=105(+90)/(1++90). Estimate the relaxation time (in seconds) and shear modulus G (in

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For a given polymeric material, the oscillatory shear measurements provide G=2104(+ 90)/(1++90) and G=105(+90)/(1++90). Estimate the relaxation time (in seconds) and shear modulus G (in Pa ) of the material. How will you estimate viscosity of the material

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