What is the acceleration of a 50kg object pushed with a force of 500Newtons

Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

Osmosis is often viewed incorrectly as a process driven directly by differences in solute concentration across a selectively permeable membrane. what really drives osmosis? view available hint(s)osmosis is often viewed incorrectly as a process driven directly by differences in solute concentration across a selectively permeable membrane. what really drives osmosis? the first law of thermodynamicsthe difference in the height of water columns on either side of a selectively permeable membranethe difference in water concentration across a selectively permeable membranethe difference in sugar or ion concentration across a selectively permeable membrane

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?