Answer:
physic is branch of science in which math is its brother and will deal with the equation,law and evidence of natural phenomenon.
For simplicity, let's call vector B-A vector C Then C is
Cx = (-6.1 - 2.2)
Cy = (-2.2 - (-6.9)) Or,
Cx = -8.3 Cy = 4.7
The magnitude is found with the Pythagorean theorem
||C|| = √(-8.3² + 4.7²) = 9.538
The answer would be (A) Protons
Hydro then electric or solar power
