How does the engine get the spacecraft to space?

An object has a weight of 500 on earth what is the mass of this object

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

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).