Assuming 70% of earth's surface is covered in water at an average depth of 2.5 mi, estimate the mass of the water on earth in kilograms.

Aregular polygon has angkes of size 150° each.how many side has the polygon

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 composition of water moves to begin a deepwater current?