The diffusion coefficients for copper diffusing in gold are given at two temperatures (hint: logarithm):(a) Determine the values of D0and the activation energy Qd?(b) What is the magnitude of D at 1100°C?

Which notation is used to represent an alpha particle? a. b. c. d.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?

Marvin records scientific data about lake superior. for which property has marvin forgotten to use an si unit of measurement? shore length high temperature low temperature annual precipitation