How many letters long is the average American last name?

A word that starts with f and means resilient and adaptable? Mad gab - Hustle happen thief ace? Silent g words? What do eys do? On a playground slide a child has potential energy that decrease by 1000 J while her kinetic energy increases by 900 J What other form of energy is involved and how much? Is there a company that can make a stuffed animal of you? What are the specific rules and guidelines for using the double joker tiles in Rummikub? Akind of cat that has the letters prisnae? Can you explain how the ability 'MTG can't be blocked' works in the context of gameplay"? What is the significance of the 29 hand in cribbage? Whose name do you say first when introducing your spouse to your boss? A person 70 years old is called what? Who said behind every great man is a woman rolling her eyes? What is a scratch or stain that begins with mar? What does taking the air restrictors out of a dart gun do? Beverage begin with the letter K? How does the mancala capture work in the game? Which words are related to insightful? Where does one find Batman LEGOs? Names of jobs ending with or?