3 - b) weight decreases
4 -a) 50 kg as mass is same everywhere
5 - b) 200 dynes
continents, paleoclimate indicators, truncated geologic features, and fossils:D
Explanation:
Only few supernova are observed in our galaxy -
Type II supernovae ( i.e. the explosions of the massive stars ) occurred in the Milky Way, and they might be hidden by the intervening dust if they are located in the more distant parts of our Galaxy .
Type Ia supernovae , which need a white dwarf star in the binary star system , are brighter than the type II supernovae , but some of them could also happen in the older parts of Galaxy which are hidden due to the buildup of the dust and gas .
Letter na that would be the answer
