What type of charge transfer occurs when two objects are rubbed together?

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

The rules of engagement (roe) working group is often used to (select all that apply.)

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?