Calculate the diffusion coefficient for copper in aluminum at 700°c. pre-exponential and activation energy values for this system are 65x10 and 1 mol, respectively oa.4.6 x 10-15 m2/s ob.5.7x 102m2ts oc.3.9 x 102 m2/s d. 3.25 x 10 12m2/s

An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 26 mm and 103 mm. the electric potential of the inner conductor with respect to the outer conductor is - 700 v (k = 1/4πε 0 = 8.99 × 109 n · m2/c2) the energy stored in a 1.0-m length of this capacitor is closest to