Answer
a. 0V.
b. 0.0100V
c. 0V.
Work Step by Step
a. The magnetic flux does not change. There is no induced emf.
b. $\epsilon = vBL$, where the 40.0cm length is the one that is moving perpendicular to the magnetic field.
$$\epsilon = vBL=(0.0200m/s)(1.25T)(0.400m)=0.0100V$$
c. The magnetic flux does not change. There is no induced emf.
