How many tennis balls are in 8 bags if each bag holds 25 tennis balls.

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?