A system does 151 J of work on its environment and gains 86.6 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment.

The center is basically the heart of it

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

Ok what do you need with

Answer///(d) atoms contain small,negatively charged particles;