Assuming the surface is not frictionless, and the final velocity of the car in the previous question is only 3 m/s, how much energy is lost due to friction?

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 !

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

Which of the following is the best name for mgcl2