What is the function of the wool of a calorimeter​

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

An atom that has gained or lost electrons is called an _