Since all stars begin their lives with the same basic composition, what characteristic most determines how they will differ?
1. location where they are formed
2. time they are formed
3. luminosity they are formed with
4. mass they are formed with
5. color they are formed with

How many atoms of nitrogen are in the chemical formula ni(w on

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.

Five renewable energy resources are wind, sunlight, moving water and geothermal energy. question 2 options: true false