Hello, can I get a step by step explanation on these 3 questions?

A 0.49-m length of wire is formed into a single-turn, square loop in which there is a current of 12 A. The loop is placed in a magnetic eld of 0.10 T. What is the maximum torque that the loop can experience? Number I Units | 3| When a charged particle moves at an angle of 23.50 with respect to a magnetic field, it experiences a magnetic force of magnitude F. At what angle (less than 909) with respect to this field will this particle, moving at the same speed, experience a magnetic force of magnitude 2F? Number UnitsA positively charged particle of mass 7.44 x 10" kg is traveling due east with a speed of 85.2 m/s and enters a 0.439-T uniform magnetic field. The particle moves through one-quarter of a circle in a time of 3.51 x 10"s, at which time it leaves the field heading due south. All during the motion the particle moves perpendicular to the magnetic field. (a) What is the magnitude of the magnetic force acting on the particle? (b) Determine the magnitude of its charge. B (out of screen) (a) Number Units (b) Number Units