In a paragraph, describe why portable solar panels were helpful to the people of Puerto Roco who had to deal with destruction after a hurricane. Be sure to explain which qualities of the portable solar panels are most helpful to people deal with emergency situations. PLEASE HELP ME ASAP

What are chlorofluorocarbons and what impact do they have on the atmosphere?

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

Explain what happens at the saturation point when adding salt to water at room temperature.