How do scientists know the earth’s magnetic field has reversed itself many times in the past?

What is magnetic flux? explain faraday's law of induction.

An object starts from rest at point f and speeds up continuously as it moves around an oval. a. choose a point about 1/8 th of the way around the oval from point f, and label it point g. draw a vector to represent the velocity of the object at point g. b. determine the change in velocity vector   between points f and g.

What are similarities and differences of reflection, refraction, diffraction and absorption?