When the switch is turned on, a wire connects the anode to the cathode. Do batteries require any energy to start the redox reaction? If not, what causes the electrons to transfer from one species to another?

the answer to your question is c

5.6⋅10−^19  j

do you need the explaination?

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.