Which kinds of objects emit light? a)objects that shine b)hot objects c)distant objects d)colored objects e)all objects

A) objects that shine  

B) hot objects  

Actually our eyes see objects when light reflects from those objects and reach our eyes. Emission of light is only possible from source of light. The other one is reflection. So in the given options shiny objects and hot objects can become the source of light that is why we can say that shiny and hot objects emit light.

measure their densities same density, same sub

force tends to be low and long diustance masses are high