Aconcave lens can only form a. a. real image. b. reversed image. c. virtual image. d. magnified image.

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.

How does an observation about an object differ from an inference about that object

What equation is used to calculate the weight of an object on a plant ?