Which statement best describes how sediment forms? A. Loose material is cemented by pressure.

B. Chemical changes cause sediment to compact together.

C. Molten rock cools above Earth’s surface.

D. Weathering breaks down rock and other material.

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