A window’s metal frame is essentially a metal loop through which a magnetic field can ch...

A window’s metal frame is essentially a metal loop through which a magnetic field can change when the window swings shut abruptly. The metal frame is 1.0 m x 0.50 m and Earth’s 5.0 x 10^-5 T magnetic field makes an angle of 53° relative to the horizontal. Which answer below is closest to the average induced emf when the window swings shut 90° in 0.20 s from initially parallel to the field?