Which process repeatedly moves matter between different forms on earth?
a. cycle
b. natural law
c. closed system
d. conservation of matter

Porque crees que el agua no podia subir mas de 10 m de altura con ese tipo de bomba

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

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.