Question $(2)$:

The figure shows a frictionless rod sliding across two rails separated by $0\mathrm{.}45$ m $.$ A magnetic field of $0\mathrm{.}750$ T points out of the page. The resistance is $12\mathrm{.}5$ and the current through the resistance is $0\mathrm{.}155$ A $.$

a$)$ Calculate the cmf $.$

b$)$ Calculate the speed of the rod.

c$)$ Calculate the magnetic force.

d$)$ Calculate the power dissipated.

e$)$ Calculate the power generated by the external force.