A 0.25 m long wire carries a 12 A current west. Earth's magnetic field at that point is 4.8E-5 T to the north. What is the magnitude of the force in the wire?
A) 2.3E-5 N
B) 1.4E-4 N
C) 2.3E-3N
D) 1.4E-2N

Iwill give brainliest if you answer right : )

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?