In the earth's mantle, heat is transferred in large convection currents. within these currents, a.  cooler rock rises and hotter rock sinks. b.  hotter rock rises and cooler rock sinks. c.  hotter and cooler rock sink but do not rise. d.  cooler and hotter rock rise but do not sink.

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

A40.0 l tank of ammonia has a pressure of 12.7 kpa. calculate the. volume of the ammonia if it’s pressure is changed to 8.4 kpa while its temperature remains constant.

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).