A flexible, circular conducting loop of radius 0.15m and resistance 4.0(omega sign) lies in a uniform magnetic field of 0.25t. The loop is pulled on opposite sides by equal forces and stretched until it's enclosed area us essentially zero m^2. It takes 0.30s to close the loop.
(a) determine the magnitude of the emf induced in the loop.
(b) at what rate is heat generated in the loop?