During the storm a tree fell over into a river what might happen to the tree

How is the gravitational force related to the distance between two objects?

The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.

Arrange the images in order to show how lake-effect snow occurs.