Please help me solve the following math problems!

1. A current-carrying wire is bent into the shape of a square of edge-length 4 cm and is placed in the xy plane. It carries a current of 1.5A. What is the magnitude of the torque on the wire if there is a uniform magnetic field of 0.6T in the z direction? Answer in units of Nm.

2.

A single charged positive ion that has a mass of 7.11 x 1027 kg moves clockwise with a speed of 2.27 x 104 m/s. The positively charged ion moves in a circular path that has a radius of 5.29 cm. Find the strength of the uniform magnetic eld. Answer in units of T. Your answer must be Within :l: 5.0% A square loop of wire carries a current and is located in a uniform magnetic field. The left side of the loop is aligned and attached to a fixed axis (dashed line in figure). B = 0.22 T When the plane of the loop is parallel to the magnetic field in the position shown, what is the magnitude of the torque exerted on the loop about the axis of rotation, which is along the left side of the square as indicated by the dashed line in the figure? Answer in units of N m.A wire 1.3 m long experiences a magnetic force of 0.65 N due to a perpendicular uniform magnetic field. If the wire carries a current of 10.0 A, what is the magnitude of the magnetic field? Answer in units of T.A wire 1.8 m in length carries a current of 4.5 A in a region where a uniform magnetic field has a magnitude of 0.34 T. Calculate the magnitude of the magnetic force on the wire if the angle between the magnetic field and the current is 56. Answer in units of N