A tractor pulls a trainer at a constant speed the tractor exerts a forward force of 1600N on the trailer. What is the force exerted by the trailer on the tractor?

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

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !

Which accurately compares concave and convex lenses?