Is it advisable to make a horseshoe magnet from a flexible material? Why or why not?

(a) How do we know if electrons moving in a certain region of space are being deflected by an electric field or a magnetic field (or both)? (b) Why is iron magnetic and wood not? (c) Dropping an iron magnet on hard ground weakens it. Why?

What is the direction of magnetic field at the centre of a coil carrying current in (i) the clockwise (b) the anticlockwise, direction?

. A small bar magnet placed with its axis at 30° with an external field of 0.06 T experiences a torque of 0.018 Nm. The minimum work required to rotate it from its stable to unstable equilibrium position is:

Magnetic field lines can be entirely confined within the core of a toroid, but not within a straight solenoid. Why?

This exercise is similar to the previous one. Why will a bar magnet fall slower and reach terminal velocity in a vertical copper or aluminum tube but not in a cardboard tube?

61)Which of the following is not a similarity between ferromagnetic and ferrimagnetic materials? (a) There is a coupling interaction between magnetic moments of adjacent atoms/cations for both material types. (b) Both ferromagnets and ferrimagnets form domains. (c) Hysteresis B-H behavior is displayed for both, and, thus, permanent magnetizations are possible. (d) Both can be considered nonmagnetic materials above the Curie temperature (e) NoA

Does the magnetic field change faster or slower when the magnet is inserted into or pulled out from the coil of wire continuously? Please provide an explanation.

A hiker of mass 73 kg is going to climb to the top of Mount Tam, which has an elevation of 2,574 ft. a) If the hiker starts climbing at an elevation of 545 ft, what will their change in gravitational potential energy be, in joules, once they reach the top? Assume the zero of gravitational potential energy is at sea level.  b) Repeat the above calculation for the change in gravitational potential energy, but assume the gravitational potential is zero at the top of the mountain.