Consider eight little spheres of mercury, each with a diameter of 1 mm. When they coalesce to form a single sphere, how big will it be (i. e. what is its diameter)? How does its surface area compare with the total surface area of the previous eight little spheres?

What are the phases shown in a and d called?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.