\f7. A square loop of wire 30 cm long and 10 cm wide is half inside a magnetic eld of 10 T. The loop has a total resistance of 10.0 9. As a result of the motion of the coil at a constant speed an EMF of 0.50 volts is developed. a) (S points)At what speed must the loop be extracted from the B eld to x x x generat that EMF? b) (5 points) What is the magnitude and direction of the induced V current? c) (5 points) What magnitude and direction force is required to keep the loop moving at that speed? X X X 8. (10 points) A coaxial cable carries a current in the central wire of 3 .0 A coming out of the page and an equal current in the shield going into the page. The central wire has a diameter of 2.0 mm and the shield has an inner radius of 0.80 cm and an outer diameter of 1.8 cm. The space between the central wire and the shield is filled with an insulating material. What is the magnitude and direction (clockwise or counterclockwise) of the magnetic field at a point P half way (R = 0.50 cm) between the inner wire and the outer shield