In several of the questions you've posted during the past day, we've already said that a wave with larger amplitude carries more energy. That idea is easy to apply to this question.
Answer:
12+ 18 divide by 2 is the average minutes
To protect a material from the influence of an external magnetic field, the material should be kept in soft iron ring.
So the correct answer is A.
Hope this helps,
Davinia.
This doesn’t make any sense
There is a horizontal abduction and horizontal adduction in the
transverse plane that is imaginary bisector that divides the body into two halves
upper or top and lower or bottom halves.
<span>Horizontal abduction involves the movement of the arm or thigh from
a medial or anterior position to a lateral position and in horizontal
adduction, the movement is reverse that is from lateral position to anterior
position.</span>
