2. a) A wave measures 6m from the peak to the trough. What is its amplitude? b) In a pond, there are 20 complete waves between the point where a stone fell in and the edge. The stone fell in 5m away from the edge of the pond. What is the wavelength?
c) Write down the equation that uses wave speed, frequency, and wavelength. If the waves in part b) are travelling at 2m/s, what is their frequency?"

Which changes of state do the labels represent? a: b: c:

Ineed the answers for these promblems i have

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 !