Could i please get some help with this, it would mean a lot, thank you.

Question 1 O The figure shows a wire with a loop in it. The current through the wire is 11.0 A and the diameter of the loop is 4.80 cm. What is the magnetic field at the center of the loop? Question 2 In the figure provided, a conducting bar of length /= 7.90 cm and mass m = 77.4 g rests at the left end of the two frictionless rails of length d = 10.4 cm. A uniform magnetic field of strength B= 2.15 T points upward. If the current in the bar is /= 9.07 A, what is the bar's speed as it leaves the rails at the right end