Calculate the predicted number of parent isotopes you will have after each half-life if you were to start with a sample containing 50 parent atoms.

What three things determine the shape and size of a puddle when water is poured out onto a surface

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

The diagram shows the relationship between scientific disciplines.the names of some scientific disciplines have been removed from the boxes. which scientific discipline belongs in the blue box? a.physics b.biology c.chemistry d.metallurgy