Of equations:
twice a number plus three times a second number is negative one. the first number plus four times the second number is
two.

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

No copying 15 pts how does a free-body diagram tell you about the net force on an object?

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added