In an internal combustion engine the gas spot/air mixture enters the cylinder during what?

Which branches of natural science include the study of an organism that lived 10 million years ago

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.