This part of the electromagnetic system can be used to generate power. a gamma rays b radio waves c microwaves d infrared rays

The answer that makes the most sense is:A gamma rays

Iassume the answer is 75 feet. inwards to outwards rather than outwards to inwards. probably be 75.hachures are stokes drawn in direction of the steepest slope. a series of short parallel lines drawn on a map to indicate topographic relief. it is actually called hachures on contour lines. the small marks in the center of the feature are called hachures.observe the picture attached

D. a  bar magnet with its south pole on the left