The class is about Electricity and Magnetism. The website wants exactly the perfect answer and in the same metric system units that are stated on the calculators that are on the picture for the question, if not, it'll mark it wrong.

Set 16 Problem 7 Expanding Loop in a Magnetic Field The radius of an elastic circular loop increases at a constant rate, dr/di = 6.6 cm/s. The loop is in a region of constant magnetic field B = 0.46 T whose direction is perpendicular to the plane of the loop. At t = 0, the radius of the loop is 2.3 cm. Determine the emf induced in the loop at t = 0, 5 00 O. emf = abc sIn( X x10 Submit Reset Reset All .First figure out an expression for the area A(t) of the loop as a function of time t. Then use Faraday's law: emf = d/dr(BA). and at t = 1.21 s. emf = bc sin(x 1x10 Submit Reset Reset All