Several dams on the Colorado River in Texas produce electricity through hydropower. What is an advantage of this type of energy production?

A: land is flooded when dams are built
B:Dams improve biodiversity by creating lakes out of rivers
C:hydropower provides renewable energy for human use
D:electricity can only be generated during daylight hours

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