Identify the dependent variable in this investigation​

What is the magnitude of the resultant vector round your answer to the nearest tenth

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

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.2 gpa). as one goes deeper and deeper in the ocean, the pressure increases by 10000 pa for every meter below the surface. if a diver goes down 80.0 m in the ocean, by how much does each cubic centimeter of her blood change in volume? give the answer in cubic centimeters (actually one cubic centimeter equals one milliliter).