Ahot air balloon is filled with air through an opening
the air is heated using a burner
the hot air causes a pressure on the inside of the balloon
use ideas about molecules to explain how the hot air causes this pressure

List one type of erosion and describe how it happens?

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)

Elements on the periodic table are ordered according to their