Describe a model that could represent the the total energy of a system as a relationship of the motion of particles on both the microscopic and macroscopic level?

An object's buoyant force and weight mean the same thing.a. trueb. false

It is really hard for me right know

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.