Need some help solving these two problems:

(a)

A circular coil with 173 windings and a cross-sectional area of 0.603 m2 is in a uniform magnetic eld of 0.370 T. The coil rotates with angular velocity 4.49 rad/s about its diameter. What is the maximum value of the induced emf in coil? A coil with 227 turns, cross sectional area 0.77 m , and resistance 20.4 12, is in a uniform magnetic field perpendicular to the plane of the coil. The magnetic field changes from 5.84 T to 3.65 T in 14.1 s. What is the average value of the induced emf in the coil (in volts) during this time interval? Enter only a positive value as your