You are in a car that is travelling to Pittsburgh, PA, which is 150 miles away. If you take 3 hours to make the trip, what was your velocity?

How would doubling the made of an object change the objects potential energy

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

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 !