Cathy is moving into a tenth-floor apartment. she has a grand piano that weighs 570 pounds and is too big to fit in the elevator or in the stairwell.

which simple machines would make it easiest for cathy to get her grand piano up to her new apartment?
a.
wheels and axles
b.
inclined planes
c.
screws
d.
pulleys

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).