A 13.6 kg shelf is held 1.50 m above the ground for 25.0 s while it is screwed in to the wall.
a) What is the potential energy of the shelf with respect to the ground?

b) How much work is done on the shelf in this time?

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).

What are the starting materials for nuclear fission? two small nuclei two large nuclei a neutron and a large nucleus a neutron and a small nucleus

Both independent and dependent clauses