You are given two metal spheres mounted on portable insulating supports. How would you give them equal and opposite charges ? You may use a glass rod rubbed
with silk but you may not touch it to the spheres. PLEASE HELP:((

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Which is the most accurate name for the ionic compound cas?

Which of the following compounds would be primarily ionic? methane, ch4, ammonia nh3, calcium chloride, cacl2, or carbon dioxide, co2