Please answer all parts SHOWING ALL STEPS CLEARLY EXPLAINING THE CONCEPTS IN SIMPLE ENGLISH!! Also, please make sure all solutions are 100% correct. DO NOT USE CALCULUS (Integration, Cross product, etc.) TO SOLVE ANY OF THESE QUESTIONS. Thank you very much!

THE CORRECT ANSWER FOR #3 IS OPTION ONE (15 LIGHTBULBS), PLEASE SHOW ALL STEPS AND EXPLAIN THE PROCESS CLEARLY TO GET THAT ANSWER.

A wire carries a current of 0.3 A and is stretched horizontally along the east-west direction. What is the magnitude of the force per one meter of the wire due to the magnetic eld of Earth whose magnitude is 5.5 x 105 T and whose direction points north and tilted down at an angle of 30 below the horizon? (1) 1.7 x 10-5N/m (2) 8.3 x 10-6 N/m (3) 1.4 x 10-5N/m (4) 1.2 x 10-5N/m (5) 1.1 x 10-5N/m 1 A special kind of circuit breaker trips when the peak current exceeds 30 A. How many 150-W lightbulbs can be plugged into a standard 110 V (Ems = 110 V) outlet Without tripping the breaker? (1) 15 (2) 20 (3) 28 (4) 31 (5) 22 1 Microwaves of frequency 6.0 GHz travel through a particular material of length 26.0 m at a speed 15% slower than the speed of light in vacuum. Approximately how many complete wavelengths t inside the material? (1)610 (2) 520 (3) 2560 (4) 3250 (5) 3470 1 Two bursts of light of the same wavelength are emitted simultaneously in parallel beams. Beam 1 passes through 1.6 m of material with index of refraction 1.8 While beam 2 passes through a material of index of refraction 2.3. What is the length of the second material so that both beams emerge from their respective materials at the same time? (1) 1.25 m (2) 2.04 m (3) 1.60 m (4) 2.59 m (5) 1.30 m A large MRI magnet is a large solenoid (with superconducting wires having zero resistance) with diameter 0.60 m and length 1.8 m. During normal operation, the current through the windings is 110 A and the magnetic field magnitude is 1.3 T. What is the energy stored in the MRI magnet? (1) 0.34 MJ (2) 0.44 MJ (3) 0.68 MJ (4) 0.54 MJ (5) 1.37 MJ