Aphysicist wants to examine the characteristics of the new material the physicist will most likely do so by what method?
a survey a group of people
b perform fieldwork in a remote location
c perform laboratory experiments
d make observations of an ecosystem
explain answer

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.