1. If the distance between two bodies that attract each other is trebled, how many times will their mutual force of attraction be?
(9 times, 3 times, 1/3, 1/9)

In a system, when potential energy decreases, then entropy also decreases. true false

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 additional product balances the reaction h2so4 + 2naoh → na2so4 + 2h2o 2oh h2o2 h3o