A food truck has a sign mounted on top, as you see in the figure. The sign has a metal border, capable of carrying current, and an area of 2.00 m2 . Initially the truck is driving west, so that a vector normal to the sign points west. At this location, the Earth's magnetic field has a magnitude of 49.6 T and a direction of due north, 63T and a direction of due north, 63 below the horizontal. Over the course of 3.50 seconds, the truck turns so that the vector normal to the loop points north.

a) Find the magnetic flux through the sign before the truck turns.

b) Find the magnetic flux through the loop after the truck finishes its turn. 

c) Find the average induced emf in the loop while the car is turning.

d) In the instant before the car finishes its turn, as viewed from the south, the induced current is: Circle one: Clockwise or counterclockwise or zero