Acontact force is a force that is exerted by an object when it touches another object. which of the following is an example of a contact force?
a) an orange falling from a tree
b) a magnet repelling another magnet
c) a wood block sliding across the top of the desk
d) hair standing up after someone takes off a wool cap.

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).