A man is pulling a box at a constant velocity across the ground by applying a force of 200 N to the
left. The box has a mass of 50kg. There is friction
between the box and the ground.

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch

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 is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?