Describe how ultrasound and infrasound differ from normal sound, and give an example of each

What type of nuclear decay causes the atomic number of an element to increase by 1?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

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 !