Which of the following is the best description of energy. A
Energy is represented in the form of mostly kinetic energy but sometimes potential energy
B
Energy is the ability to do work or to cause change.
С
Energy is when an object is moving and causing a force
D
Energy occurs when a object is producing heat and sound.

The answer is B.

The ability to do work is energy

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

their crystal patterns have been disrupted by stress